Bacteria Name Generator
Real binomial names for microbes and pathogens
Generate real, correctly formatted bacterial species names, from household microbes like Escherichia coli and Lactobacillus acidophilus to exotic extremophiles like Deinococcus radiodurans. Ideal for biology students, science fiction writers, and anyone naming a fictional outbreak.
About bacteria names
Bacterial names follow the same binomial system Linnaeus gave to plants and animals: a capitalized genus (Escherichia) followed by a lowercase species epithet (coli), both italicized in print. The genus often honors a discoverer (Escherich, Lister, Yersin, Legionella after the 1976 Legionnaires' convention) or describes shape and arrangement in Greek and Latin: strepto- means chain, staphylo- means grape cluster, -coccus is a sphere, -bacillus a rod, vibrio a comma-shaped curve. The species epithet then adds habitat, host, colour, or disease: coli lives in the colon, aureus forms golden colonies, pneumoniae causes pneumonia, radiodurans survives radiation.
These are real species names, current or historical: pathogens (Yersinia pestis, Vibrio cholerae), probiotics and food fermenters (Lactobacillus plantarum, Streptococcus thermophilus), soil and plant symbionts (Rhizobium leguminosarum, Agrobacterium tumefaciens), extremophiles and oddities (Thermus aquaticus, Thiomargarita namibiensis, Epulopiscium fishelsoni), plus antibiotic-making Streptomyces, insect symbionts, animal pathogens, and pollutant degraders. That makes the list both study reference and raw material: writers can borrow an authentic genus and coin a new epithet, or lift an obscure real species that sounds menacing.
If you invent your own, keep the grammar. Genus names take Latin nominative endings (-ella, -bacter, -coccus, -monas, -spira), while epithets are adjectives or genitives that agree with the genus (aureus with a masculine genus, aurea with a feminine one, and place names ending in -ensis).
How to choose bacteria names
- Write bacterial names in italics with the genus capitalized and the species lowercase; after the first mention, abbreviate the genus (E. coli, S. aureus).
- For a fictional pathogen, pair a real genus with an invented epithet ending in -ensis (place), -icola (dweller), or -philus (loving) so it reads like a genuine discovery.
- Match the name to the biology: -coccus for spherical bacteria, -bacillus or -bacter for rods, -spira or -spirillum for spirals, -monas for single motile cells.
- Avoid famous pathogens if your story needs mystery; readers know Yersinia pestis, but Photorhabdus luminescens or Sorangium cellulosum sound new and still real.
- Check current taxonomy before citing in academic work, since names change (Propionibacterium acnes is now Cutibacterium acnes; Clostridium difficile is Clostridioides difficile).
Frequently asked questions
How are bacteria scientifically named?
Bacteria use binomial nomenclature governed by the International Code of Nomenclature of Prokaryotes: a genus name plus a species epithet, both Latinized. Names are usually built from Greek or Latin roots describing shape, colour, habitat, or disease, or they honor a scientist.
Are these real bacteria or made up?
They are real species names, including common pathogens, probiotic and food-fermentation strains, soil bacteria, cyanobacteria, and extremophiles. Some reflect older names still widely used alongside their reclassified equivalents.
Can I use these names in a novel, game, or school project?
Yes. Scientific names are not trademarked or copyrighted, so you can use them freely; for fiction, many writers borrow a real genus and coin a new species epithet.
What is the difference between a genus and a species name?
The genus (e.g. Staphylococcus) groups closely related organisms and is always capitalized; the species epithet (e.g. aureus) identifies one member of that genus and is always lowercase. Together they form the full species name.
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All 1,000 bacteria names
A: 92 names
- Abiotrophia defectiva
- Acaryochloris marina
- Acetobacter aceti
- Acetobacter pasteurianus
- Acetobacter tropicalis
- Acholeplasma laidlawii
- Achromatium oxaliferum
- Achromobacter xylosoxidans
- Acidiphilium cryptum
- Acidithiobacillus caldus
- Acidithiobacillus ferrooxidans
- Acidobacterium capsulatum
- Acidovorax avenae
- Acidovorax citrulli
- Acinetobacter baumannii
- Acinetobacter calcoaceticus
- Acinetobacter junii
- Acinetobacter lwoffii
- Acinetobacter pittii
- Acinetobacter venetianus
- Actinobacillus pleuropneumoniae
- Actinomadura madurae
- Actinomyces israelii
- Actinomyces naeslundii
- Actinomyces odontolyticus
- Actinomyces viscosus
- Actinoplanes missouriensis
- Actinoplanes teichomyceticus
- Aequorivita antarctica
- Aerococcus urinae
A, continued
- Aerococcus viridans
- Aeromonas hydrophila
- Aeromonas salmonicida
- Aeromonas veronii
- Aggregatibacter actinomycetemcomitans
- Agrobacterium radiobacter
- Agrobacterium rhizogenes
- Agrobacterium tumefaciens
- Agrobacterium vitis
- Akkermansia glycaniphila
- Akkermansia muciniphila
- Alcaligenes aquatilis
- Alcaligenes faecalis
- Alcanivorax borkumensis
- Alcanivorax dieselolei
- Alicyclobacillus acidocaldarius
- Alicyclobacillus acidoterrestris
- Aliivibrio fischeri
- Aliivibrio logei
- Aliivibrio salmonicida
- Alistipes finegoldii
- Alistipes putredinis
- Allochromatium vinosum
- Alteromonas macleodii
- Amycolatopsis mediterranei
- Amycolatopsis orientalis
- Amycolatopsis rifamycinica
- Anabaena circinalis
- Anabaena cylindrica
- Anabaena flos-aquae
- Anabaena variabilis
A, continued
- Anaeromyxobacter dehalogenans
- Anaerostipes hadrus
- Anaplasma marginale
- Anaplasma phagocytophilum
- Anaplasma platys
- Anoxybacillus flavithermus
- Aphanizomenon flos-aquae
- Apilactobacillus kunkeei
- Aquaspirillum serpens
- Aquifex aeolicus
- Aquifex pyrophilus
- Arcanobacterium haemolyticum
- Archangium gephyra
- Arcobacter butzleri
- Aromatoleum aromaticum
- Arsenophonus nasoniae
- Arthrobacter aurescens
- Arthrobacter chlorophenolicus
- Arthrobacter globiformis
- Arthrospira maxima
- Arthrospira platensis
- Asaia bogorensis
- Asticcacaulis excentricus
- Atopobium parvulum
- Avibacterium paragallinarum
- Azorhizobium caulinodans
- Azospira oryzae
- Azospirillum brasilense
- Azospirillum lipoferum
- Azotobacter chroococcum
- Azotobacter vinelandii
B: 93 names
- Bacillus alcalophilus
- Bacillus amyloliquefaciens
- Bacillus anthracis
- Bacillus cereus
- Bacillus circulans
- Bacillus coagulans
- Bacillus halodurans
- Bacillus licheniformis
- Bacillus megaterium
- Bacillus mycoides
- Bacillus pumilus
- Bacillus subtilis
- Bacillus thuringiensis
- Bacillus velezensis
- Bacteriovorax stolpii
- Bacteroides cellulosilyticus
- Bacteroides dorei
- Bacteroides fragilis
- Bacteroides ovatus
- Bacteroides thetaiotaomicron
- Bacteroides uniformis
- Bacteroides vulgatus
- Bartonella bacilliformis
- Bartonella henselae
- Bartonella quintana
- Bartonella vinsonii
- Bdellovibrio bacteriovorus
- Bdellovibrio exovorus
- Beggiatoa alba
- Beggiatoa leptomitoformis
- Beijerinckia indica
B, continued
- Bifidobacterium adolescentis
- Bifidobacterium animalis
- Bifidobacterium asteroides
- Bifidobacterium bifidum
- Bifidobacterium breve
- Bifidobacterium catenulatum
- Bifidobacterium dentium
- Bifidobacterium infantis
- Bifidobacterium longum
- Bifidobacterium pseudocatenulatum
- Bifidobacterium thermophilum
- Bilophila wadsworthia
- Blastochloris viridis
- Blastopirellula marina
- Blattabacterium cuenoti
- Blautia hydrogenotrophica
- Blautia obeum
- Bombella apis
- Bordetella bronchiseptica
- Bordetella holmesii
- Bordetella parapertussis
- Bordetella pertussis
- Borrelia afzelii
- Borrelia anserina
- Borrelia burgdorferi
- Borrelia duttonii
- Borrelia garinii
- Borrelia hermsii
- Borrelia miyamotoi
- Borrelia recurrentis
- Bosea thiooxidans
B, continued
- Brachyspira aalborgi
- Brachyspira hyodysenteriae
- Brachyspira pilosicoli
- Bradyrhizobium diazoefficiens
- Bradyrhizobium elkanii
- Bradyrhizobium japonicum
- Brevibacillus laterosporus
- Brevibacterium aurantiacum
- Brevibacterium casei
- Brevibacterium epidermidis
- Brevibacterium linens
- Brevundimonas diminuta
- Brevundimonas vesicularis
- Brochothrix thermosphacta
- Brucella abortus
- Brucella canis
- Brucella melitensis
- Brucella ovis
- Brucella suis
- Buchnera aphidicola
- Burkholderia cenocepacia
- Burkholderia cepacia
- Burkholderia gladioli
- Burkholderia glumae
- Burkholderia mallei
- Burkholderia multivorans
- Burkholderia pseudomallei
- Burkholderia thailandensis
- Burkholderia vietnamiensis
- Burkholderia xenovorans
- Butyrivibrio fibrisolvens
C: 97 names
- Caldicellulosiruptor bescii
- Caldicellulosiruptor saccharolyticus
- Caldilinea aerophila
- Calothrix parietina
- Caminibacter mediatlanticus
- Campylobacter coli
- Campylobacter concisus
- Campylobacter curvus
- Campylobacter fetus
- Campylobacter jejuni
- Campylobacter lari
- Campylobacter upsaliensis
- Capnocytophaga canimorsus
- Capnocytophaga cynodegmi
- Capnocytophaga ochracea
- Capnocytophaga sputigena
- Carboxydothermus hydrogenoformans
- Cardiobacterium hominis
- Carnobacterium divergens
- Carnobacterium maltaromaticum
- Carnobacterium pleistocenium
- Carsonella ruddii
- Caulobacter crescentus
- Cedecea davisae
- Cellulomonas fimi
- Cellulomonas flavigena
- Cellulophaga lytica
- Chitinophaga pinensis
- Chlamydia pecorum
- Chlamydia pneumoniae
- Chlamydia psittaci
- Chlamydia trachomatis
C, continued
- Chloracidobacterium thermophilum
- Chlorobium limicola
- Chlorobium tepidum
- Chloroflexus aurantiacus
- Chloroherpeton thalassium
- Chondromyces crocatus
- Christensenella minuta
- Chromatium okenii
- Chromobacterium violaceum
- Chromohalobacter marismortui
- Chromohalobacter salexigens
- Chroococcidiopsis thermalis
- Chryseobacterium gleum
- Chryseobacterium indologenes
- Citrobacter freundii
- Citrobacter koseri
- Citrobacter rodentium
- Clavibacter michiganensis
- Clavibacter sepedonicus
- Clostridioides difficile
- Clostridium acetobutylicum
- Clostridium botulinum
- Clostridium butyricum
- Clostridium cellulolyticum
- Clostridium chauvoei
- Clostridium histolyticum
- Clostridium kluyveri
- Clostridium novyi
- Clostridium pasteurianum
- Clostridium perfringens
- Clostridium piliforme
- Clostridium scindens
C, continued
- Clostridium septicum
- Clostridium sordellii
- Clostridium sporogenes
- Clostridium tetani
- Clostridium thermocellum
- Clostridium tyrobutyricum
- Cobetia marina
- Collimonas fungivorans
- Collinsella aerofaciens
- Colwellia psychrerythraea
- Comamonas testosteroni
- Companilactobacillus farciminis
- Coprococcus eutactus
- Corallococcus coralloides
- Coriobacterium glomerans
- Corynebacterium amycolatum
- Corynebacterium diphtheriae
- Corynebacterium glutamicum
- Corynebacterium jeikeium
- Corynebacterium striatum
- Corynebacterium xerosis
- Coxiella burnetii
- Cristispira pectinis
- Crocosphaera watsonii
- Cronobacter sakazakii
- Cupriavidus metallidurans
- Cupriavidus necator
- Curtobacterium flaccumfaciens
- Cutibacterium acnes
- Cycloclasticus pugetii
- Cylindrospermopsis raciborskii
- Cytophaga fermentans
- Cytophaga hutchinsonii
D: 37 names
- Dechloromonas aromatica
- Deferribacter thermophilus
- Dehalobacter restrictus
- Dehalococcoides mccartyi
- Dehalogenimonas lykanthroporepellens
- Deinococcus deserti
- Deinococcus geothermalis
- Deinococcus murrayi
- Deinococcus radiodurans
- Delftia acidovorans
- Dermacoccus nishinomiyaensis
- Dermatophilus congolensis
- Derxia gummosa
- Desulfitobacterium hafniense
- Desulfobacter postgatei
- Desulfobulbus propionicus
- Desulfomonile tiedjei
- Desulfosarcina variabilis
- Desulfosporosinus orientis
- Desulfotalea psychrophila
- Desulfotomaculum nigrificans
- Desulfovibrio desulfuricans
- Desulfovibrio gigas
- Desulfovibrio magneticus
- Desulfovibrio piger
- Desulfovibrio vulgaris
- Desulfurobacterium thermolithotrophum
- Desulfuromonas acetoxidans
- Dialister invisus
- Dichelobacter nodosus
- Dickeya dadantii
- Dickeya solani
- Dictyoglomus thermophilum
- Dietzia maris
- Dinoroseobacter shibae
- Dokdonia donghaensis
- Dorea longicatena
E: 33 names
- Ectothiorhodospira mobilis
- Edaphobacter modestus
- Edwardsiella ictaluri
- Edwardsiella tarda
- Eggerthella lenta
- Ehrlichia canis
- Ehrlichia chaffeensis
- Ehrlichia ruminantium
- Eikenella corrodens
- Elizabethkingia meningoseptica
- Elusimicrobium minutum
- Endomicrobium proavitum
- Endozoicomonas elysicola
- Ensifer adhaerens
- Enterobacter cloacae
- Enterobacter hormaechei
- Enterococcus casseliflavus
- Enterococcus durans
- Enterococcus faecalis
- Enterococcus faecium
- Enterococcus gallinarum
- Epulopiscium fishelsoni
- Erwinia amylovora
- Erwinia tracheiphila
- Erysipelothrix rhusiopathiae
- Erythrobacter longus
- Escherichia albertii
- Escherichia coli
- Escherichia fergusonii
- Eubacterium hallii
- Eubacterium limosum
- Eubacterium rectale
- Exiguobacterium sibiricum
F: 22 names
- Faecalibacterium prausnitzii
- Fervidobacterium islandicum
- Fibrobacter succinogenes
- Finegoldia magna
- Fischerella muscicola
- Flavobacterium columnare
- Flavobacterium johnsoniae
- Flavobacterium psychrophilum
- Flexibacter flexilis
- Francisella noatunensis
- Francisella novicida
- Francisella tularensis
- Frankia alni
- Frankia casuarinae
- Frankia elaeagni
- Fretibacterium fastidiosum
- Frischella perrara
- Furfurilactobacillus rossiae
- Fusobacterium gonidiaformans
- Fusobacterium necrophorum
- Fusobacterium nucleatum
- Fusobacterium varium
G: 27 names
- Gallibacterium anatis
- Gallionella ferruginea
- Gardnerella vaginalis
- Gemella morbillorum
- Gemmata massiliana
- Gemmata obscuriglobus
- Gemmatimonas aurantiaca
- Geobacillus kaustophilus
- Geobacillus stearothermophilus
- Geobacter bemidjiensis
- Geobacter lovleyi
- Geobacter metallireducens
- Geobacter sulfurreducens
- Geodermatophilus obscurus
- Geovibrio ferrireducens
- Gilliamella apicola
- Glaesserella parasuis
- Gloeobacter violaceus
- Gloeotrichia echinulata
- Gluconacetobacter diazotrophicus
- Gluconobacter frateurii
- Gluconobacter oxydans
- Glutamicibacter nicotianae
- Gordonia bronchialis
- Gramella forsetii
- Granulicatella adiacens
- Grimontia hollisae
H: 32 names
- Haemophilus aegyptius
- Haemophilus ducreyi
- Haemophilus haemolyticus
- Haemophilus influenzae
- Haemophilus parainfluenzae
- Hafnia alvei
- Hahella chejuensis
- Halanaerobium praevalens
- Halobacteriovorax marinus
- Halomonas elongata
- Halomonas titanicae
- Halorhodospira halophila
- Helicobacter bilis
- Helicobacter felis
- Helicobacter heilmannii
- Helicobacter hepaticus
- Helicobacter mustelae
- Helicobacter pylori
- Heliobacillus mobilis
- Heliobacterium chlorum
- Heliobacterium modesticaldum
- Herbaspirillum rubrisubalbicans
- Herbaspirillum seropedicae
- Herpetosiphon aurantiacus
- Histophilus somni
- Holospora obtusa
- Hydrogenobacter thermophilus
- Hydrogenophaga flava
- Hydrogenophilus thermoluteolus
- Hydrogenovibrio marinus
- Hyphomicrobium denitrificans
- Hyphomonas neptunium
I: 6 names
- Ideonella sakaiensis
- Idiomarina loihiensis
- Ignavibacterium album
- Ilyobacter polytropus
- Intrasporangium calvum
- Isosphaera pallida
J: 2 names
- Janthinobacterium lividum
- Jonquetella anthropi
K: 15 names
- Kineococcus radiotolerans
- Kingella kingae
- Kitasatospora setae
- Klebsiella aerogenes
- Klebsiella granulomatis
- Klebsiella oxytoca
- Klebsiella pneumoniae
- Klebsiella variicola
- Kluyvera ascorbata
- Kluyvera cryocrescens
- Kocuria kristinae
- Kocuria rhizophila
- Komagataeibacter xylinus
- Kosmotoga olearia
- Ktedonobacter racemifer
L: 58 names
- Lachnospira multipara
- Lacticaseibacillus paracasei
- Lactobacillus acidophilus
- Lactobacillus amylovorus
- Lactobacillus casei
- Lactobacillus crispatus
- Lactobacillus delbrueckii
- Lactobacillus gasseri
- Lactobacillus helveticus
- Lactobacillus iners
- Lactobacillus johnsonii
- Lactobacillus kefiranofaciens
- Lactobacillus plantarum
- Lactobacillus reuteri
- Lactobacillus rhamnosus
- Lactobacillus sanfranciscensis
- Lactococcus garvieae
- Lactococcus lactis
- Lactococcus raffinolactis
- Laribacter hongkongensis
- Latilactobacillus curvatus
- Latilactobacillus sakei
- Lawsonia intracellularis
- Legionella longbeachae
- Legionella micdadei
- Legionella pneumophila
- Leifsonia xyli
- Lentilactobacillus buchneri
- Lentilactobacillus kefiri
L, continued
- Lentisphaera araneosa
- Leptonema illini
- Leptospira biflexa
- Leptospira borgpetersenii
- Leptospira interrogans
- Leptospira kirschneri
- Leptospirillum ferriphilum
- Leptospirillum ferrooxidans
- Leptothrix discophora
- Leptothrix ochracea
- Leptotrichia buccalis
- Leptotrichia goodfellowii
- Leuconostoc citreum
- Leuconostoc mesenteroides
- Levilactobacillus brevis
- Ligilactobacillus salivarius
- Limosilactobacillus fermentum
- Listeria ivanovii
- Listeria monocytogenes
- Listeria seeligeri
- Listeria welshimeri
- Loigolactobacillus coryniformis
- Lonepinella koalarum
- Luteimonas mephitis
- Lyngbya majuscula
- Lysinibacillus fusiformis
- Lysinibacillus sphaericus
- Lysobacter antibioticus
- Lysobacter enzymogenes
M: 72 names
- Macrococcus caseolyticus
- Magnetococcus marinus
- Magnetospirillum gryphiswaldense
- Magnetospirillum magnetotacticum
- Mannheimia haemolytica
- Marinithermus hydrothermalis
- Marinobacter hydrocarbonoclasticus
- Marinomonas mediterranea
- Mariprofundus ferrooxydans
- Massilia timonae
- Mastigocladus laminosus
- Megasphaera elsdenii
- Meiothermus ruber
- Melissococcus plutonius
- Mesorhizobium loti
- Methylibium petroleiphilum
- Methylobacillus flagellatus
- Methylobacterium extorquens
- Methylobacterium organophilum
- Methylobacterium radiotolerans
- Methylocapsa acidiphila
- Methylocella silvestris
- Methylococcus capsulatus
- Methylocystis parvus
- Methylomonas methanica
- Methylophilus methylotrophus
- Methylosinus trichosporium
- Micavibrio aeruginosavorus
- Micrococcus luteus
- Microcoleus vaginatus
- Microcystis aeruginosa
- Micromonospora carbonacea
- Micromonospora echinospora
- Mobiluncus curtisii
- Moorella thermoacetica
- Moraxella bovoculi
M, continued
- Moraxella catarrhalis
- Moraxella lacunata
- Morganella morganii
- Moritella marina
- Moritella viscosa
- Mucilaginibacter paludis
- Mycobacterium abscessus
- Mycobacterium africanum
- Mycobacterium avium
- Mycobacterium bovis
- Mycobacterium chelonae
- Mycobacterium fortuitum
- Mycobacterium genavense
- Mycobacterium gordonae
- Mycobacterium haemophilum
- Mycobacterium intracellulare
- Mycobacterium kansasii
- Mycobacterium leprae
- Mycobacterium marinum
- Mycobacterium smegmatis
- Mycobacterium tuberculosis
- Mycobacterium ulcerans
- Mycobacterium vanbaalenii
- Mycobacterium xenopi
- Mycoplana dimorpha
- Mycoplasma bovis
- Mycoplasma gallisepticum
- Mycoplasma genitalium
- Mycoplasma haemofelis
- Mycoplasma hyopneumoniae
- Mycoplasma mycoides
- Mycoplasma penetrans
- Mycoplasma pneumoniae
- Mycoplasma synoviae
- Myxococcus stipitatus
- Myxococcus xanthus
N: 31 names
- Nannocystis exedens
- Natranaerobius thermophilus
- Nautilia profundicola
- Neisseria elongata
- Neisseria flavescens
- Neisseria gonorrhoeae
- Neisseria lactamica
- Neisseria meningitidis
- Neisseria mucosa
- Neisseria sicca
- Neisseria subflava
- Neorickettsia risticii
- Neorickettsia sennetsu
- Nitratiruptor tergarcus
- Nitrobacter winogradskyi
- Nitrosococcus oceani
- Nitrosomonas europaea
- Nitrosospira multiformis
- Nitrospira moscoviensis
- Nocardia asteroides
- Nocardia brasiliensis
- Nocardia cyriacigeorgica
- Nocardia farcinica
- Nocardia seriolae
- Nocardioides simplex
- Nocardiopsis dassonvillei
- Nodularia spumigena
- Nonomuraea gerenzanensis
- Nostoc flagelliforme
- Nostoc punctiforme
- Novosphingobium aromaticivorans
O: 16 names
- Oceanicaulis alexandrii
- Oceanithermus profundus
- Oceanobacillus iheyensis
- Oceanospirillum linum
- Ochrobactrum anthropi
- Octadecabacter arcticus
- Odoribacter splanchnicus
- Oenococcus oeni
- Oleiphilus messinensis
- Oleispira antarctica
- Opitutus terrae
- Orientia tsutsugamushi
- Ornithobacterium rhinotracheale
- Oscillatoria princeps
- Oscillibacter valericigenes
- Oxalobacter formigenes
P: 91 names
- Paenibacillus larvae
- Paenibacillus polymyxa
- Paenibacillus popilliae
- Pandoraea pnomenusa
- Pantoea agglomerans
- Pantoea ananatis
- Pantoea stewartii
- Parabacteroides distasonis
- Parabacteroides merdae
- Paraburkholderia phytofirmans
- Paracoccus denitrificans
- Parvimonas micra
- Pasteurella multocida
- Pectobacterium atrosepticum
- Pectobacterium carotovorum
- Pediococcus acidilactici
- Pediococcus damnosus
- Pediococcus pentosaceus
- Pedobacter heparinus
- Pelagibacter ubique
- Pelobacter carbinolicus
- Pelodictyon clathratiforme
- Peptostreptococcus anaerobius
- Peredibacter starrii
- Persephonella marina
- Petrotoga mobilis
- Phaeobacter inhibens
- Phaeospirillum molischianum
- Phenylobacterium immobile
- Photobacterium damselae
P, continued
- Photobacterium leiognathi
- Photobacterium phosphoreum
- Photobacterium profundum
- Photorhabdus asymbiotica
- Photorhabdus luminescens
- Photorhabdus temperata
- Pirellula staleyi
- Piscirickettsia salmonis
- Planctomyces bekefii
- Planctopirus limnophila
- Planktothrix agardhii
- Planktothrix rubescens
- Planococcus citreus
- Planococcus halocryophilus
- Plesiomonas shigelloides
- Polaribacter irgensii
- Polaromonas naphthalenivorans
- Polaromonas vacuolata
- Porphyromonas endodontalis
- Porphyromonas gingivalis
- Porphyromonas levii
- Prevotella bivia
- Prevotella copri
- Prevotella denticola
- Prevotella histicola
- Prevotella intermedia
- Prevotella melaninogenica
- Prochlorococcus marinus
- Prochloron didemni
- Propionibacterium acidipropionici
P, continued
- Propionibacterium freudenreichii
- Propionibacterium jensenii
- Propionigenium modestum
- Prosthecobacter dejongeii
- Prosthecochloris aestuarii
- Proteus mirabilis
- Proteus penneri
- Proteus vulgaris
- Providencia rettgeri
- Providencia stuartii
- Pseudoalteromonas haloplanktis
- Pseudoalteromonas tunicata
- Pseudomonas aeruginosa
- Pseudomonas chlororaphis
- Pseudomonas cichorii
- Pseudomonas entomophila
- Pseudomonas fluorescens
- Pseudomonas luteola
- Pseudomonas mendocina
- Pseudomonas oleovorans
- Pseudomonas protegens
- Pseudomonas putida
- Pseudomonas savastanoi
- Pseudomonas stutzeri
- Pseudomonas syringae
- Pseudomonas tolaasii
- Pseudonocardia dioxanivorans
- Psychrilyobacter atlanticus
- Psychrobacter arcticus
- Psychromonas ingrahamii
- Pusillimonas noertemannii
R: 51 names
- Ralstonia eutropha
- Ralstonia pickettii
- Ralstonia solanacearum
- Raoultella ornithinolytica
- Rathayibacter toxicus
- Renibacterium salmoninarum
- Rhizobium etli
- Rhizobium galegae
- Rhizobium leguminosarum
- Rhizobium tropici
- Rhodobacter capsulatus
- Rhodobacter sphaeroides
- Rhodococcus equi
- Rhodococcus erythropolis
- Rhodococcus fascians
- Rhodococcus opacus
- Rhodococcus rhodochrous
- Rhodocyclus tenuis
- Rhodoferax ferrireducens
- Rhodomicrobium vannielii
- Rhodopirellula baltica
- Rhodopseudomonas palustris
- Rhodospirillum centenum
- Rhodospirillum rubrum
- Rhodothermus marinus
R, continued
- Rhodovibrio salinarum
- Rhodovulum sulfidophilum
- Rickettsia africae
- Rickettsia akari
- Rickettsia conorii
- Rickettsia felis
- Rickettsia prowazekii
- Rickettsia rickettsii
- Rickettsia typhi
- Rickettsiella grylli
- Riemerella anatipestifer
- Roseburia intestinalis
- Roseiflexus castenholzii
- Roseobacter denitrificans
- Roseobacter litoralis
- Roseovarius nubinhibens
- Rothia dentocariosa
- Rothia mucilaginosa
- Rubrivivax gelatinosus
- Rubrobacter radiotolerans
- Rubrobacter xylanophilus
- Ruegeria pomeroyi
- Ruminococcus albus
- Ruminococcus bromii
- Ruminococcus flavefaciens
- Ruminococcus gnavus
S: 120 names
- Saccharophagus degradans
- Saccharopolyspora erythraea
- Saccharopolyspora spinosa
- Salinibacter ruber
- Salinispora arenicola
- Salinispora tropica
- Salinivibrio costicola
- Salmonella bongori
- Salmonella enterica
- Saprospira grandis
- Scytonema hofmannii
- Sediminispirochaeta smaragdinae
- Selenomonas sputigena
- Serratia entomophila
- Serratia liquefaciens
- Serratia marcescens
- Serratia symbiotica
- Shewanella algae
- Shewanella baltica
- Shewanella benthica
- Shewanella loihica
- Shewanella oneidensis
- Shewanella putrefaciens
- Shewanella violacea
- Shigella boydii
- Shigella dysenteriae
- Shigella flexneri
- Shigella sonnei
- Simkania negevensis
- Simonsiella muelleri
- Sinorhizobium fredii
- Sinorhizobium meliloti
- Sneathia sanguinegens
- Snodgrassella alvi
- Sodalis glossinidius
- Sorangium cellulosum
- Sphaerotilus natans
- Sphingobacterium multivorum
- Sphingobium chlorophenolicum
- Sphingobium yanoikuyae
S, continued
- Sphingomonas paucimobilis
- Sphingomonas wittichii
- Sphingopyxis alaskensis
- Spirillum volutans
- Spirochaeta aurantia
- Spirochaeta thermophila
- Spiroplasma citri
- Spiroplasma kunkelii
- Spiroplasma poulsonii
- Spirulina subsalsa
- Sporocytophaga myxococcoides
- Sporosarcina pasteurii
- Sporosarcina ureae
- Staphylococcus aureus
- Staphylococcus capitis
- Staphylococcus epidermidis
- Staphylococcus haemolyticus
- Staphylococcus hyicus
- Staphylococcus lugdunensis
- Staphylococcus pseudintermedius
- Staphylococcus saprophyticus
- Staphylococcus warneri
- Staphylococcus xylosus
- Stenotrophomonas maltophilia
- Stigmatella aurantiaca
- Streptobacillus moniliformis
- Streptococcus agalactiae
- Streptococcus anginosus
- Streptococcus constellatus
- Streptococcus dysgalactiae
- Streptococcus gallolyticus
- Streptococcus gordonii
- Streptococcus iniae
- Streptococcus intermedius
- Streptococcus mitis
- Streptococcus mutans
- Streptococcus oralis
- Streptococcus pneumoniae
- Streptococcus pyogenes
- Streptococcus salivarius
S, continued
- Streptococcus sobrinus
- Streptococcus suis
- Streptococcus thermophilus
- Streptococcus uberis
- Streptomyces albus
- Streptomyces ambofaciens
- Streptomyces antibioticus
- Streptomyces aureofaciens
- Streptomyces avermitilis
- Streptomyces cattleya
- Streptomyces clavuligerus
- Streptomyces coelicolor
- Streptomyces fradiae
- Streptomyces griseus
- Streptomyces hygroscopicus
- Streptomyces kanamyceticus
- Streptomyces lincolnensis
- Streptomyces lividans
- Streptomyces natalensis
- Streptomyces noursei
- Streptomyces peucetius
- Streptomyces rimosus
- Streptomyces roseosporus
- Streptomyces scabiei
- Streptomyces tenebrarius
- Streptomyces venezuelae
- Streptomyces verticillus
- Streptosporangium roseum
- Subdoligranulum variabile
- Sulfitobacter pontiacus
- Sulfobacillus thermosulfidooxidans
- Sulfurihydrogenibium azorense
- Sulfurimonas autotrophica
- Sulfurimonas denitrificans
- Sulfurospirillum deleyianum
- Sulfurovum lithotrophicum
- Symbiobacterium thermophilum
- Synechococcus elongatus
- Synergistes jonesii
- Syntrophobacter fumaroxidans
T: 51 names
- Tannerella forsythia
- Taylorella equigenitalis
- Tenacibaculum maritimum
- Teredinibacter turnerae
- Terriglobus roseus
- Tetragenococcus halophilus
- Thalassolituus oleivorans
- Thauera aromatica
- Thermanaerovibrio acidaminovorans
- Thermoanaerobacter ethanolicus
- Thermoanaerobacter tengcongensis
- Thermoanaerobacterium thermosaccharolyticum
- Thermobifida fusca
- Thermocrinis ruber
- Thermodesulfatator indicus
- Thermodesulfobacterium commune
- Thermodesulfovibrio yellowstonii
- Thermomicrobium roseum
- Thermomonospora curvata
- Thermosipho africanus
- Thermosynechococcus elongatus
- Thermotoga maritima
- Thermotoga neapolitana
- Thermotoga petrophila
- Thermovibrio ammonificans
T, continued
- Thermus aquaticus
- Thermus brockianus
- Thermus filiformis
- Thermus scotoductus
- Thermus thermophilus
- Thioalkalivibrio versutus
- Thiobacillus denitrificans
- Thiobacillus thioparus
- Thiocapsa roseopersicina
- Thiomargarita namibiensis
- Thiomicrospira crunogena
- Thiomonas intermedia
- Thiospirillum jenense
- Thiothrix nivea
- Treponema carateum
- Treponema denticola
- Treponema pallidum
- Treponema phagedenis
- Treponema primitia
- Treponema socranskii
- Trichodesmium erythraeum
- Tropheryma whipplei
- Truepera radiovictrix
- Trueperella pyogenes
- Tsukamurella paurometabola
- Turicibacter sanguinis
U: 2 names
- Ureaplasma parvum
- Ureaplasma urealyticum
V: 23 names
- Vampirovibrio chlorellavorus
- Variovorax paradoxus
- Veillonella atypica
- Veillonella dispar
- Veillonella parvula
- Verrucomicrobium spinosum
- Vibrio alginolyticus
- Vibrio anguillarum
- Vibrio campbellii
- Vibrio cholerae
- Vibrio coralliilyticus
- Vibrio fluvialis
- Vibrio furnissii
- Vibrio harveyi
- Vibrio metschnikovii
- Vibrio mimicus
- Vibrio natriegens
- Vibrio parahaemolyticus
- Vibrio shilonii
- Vibrio splendidus
- Vibrio vulnificus
- Virgibacillus pantothenticus
- Vitreoscilla stercoraria
W: 8 names
- Waddlia chondrophila
- Weeksella virosa
- Weissella cibaria
- Weissella confusa
- Wigglesworthia glossinidia
- Winogradskyella thalassocola
- Wolbachia pipientis
- Wolinella succinogenes
X: 11 names
- Xanthobacter autotrophicus
- Xanthomonas axonopodis
- Xanthomonas campestris
- Xanthomonas fragariae
- Xanthomonas oryzae
- Xanthomonas translucens
- Xanthomonas vesicatoria
- Xenorhabdus bovienii
- Xenorhabdus nematophila
- Xylella fastidiosa
- Xylella taiwanensis
Y: 6 names
- Yersinia enterocolitica
- Yersinia entomophaga
- Yersinia kristensenii
- Yersinia pestis
- Yersinia pseudotuberculosis
- Yersinia ruckeri