Yakuza Family Name Generator
Fictional gumi, kai and ikka for crime stories
A list of 1,000 names for fictional yakuza organizations in stories, tabletop campaigns and games, from Washio-gumi and Shinonome-kai to the Tsukishima Family, Tenryu-rengo and Onizuka Kogyo.
About yakuza Family names
In Japanese crime fiction a yakuza organization is named like a household or a trade crew: a founder's surname or an emblem word, then a suffix that says what kind of group it is. -gumi is a crew, a plain word that old building firms carry too. -kai is an association and suits a large, corporate syndicate. -ikka, literally one family, belongs to the old gambler and street-stall lines. -rengo is a federation of several groups. The English versions of the Like a Dragon games turn these into Family, Clan and Alliance: their Tojo Clan is a -kai and their Omi Alliance a -rengo.
This list holds 1,000 names for invented organizations, mixed so that rerolls feel varied: rare surnames with each suffix, emblem names built on dragons, tigers, cranes, chrysanthemums and storms, old province and district names, house marks such as Maruju-gumi, generation-numbered names such as Third-Generation Hanamura-gumi, and front companies such as Onizuka Kogyo. A small share is game canon, and each of those entries carries its source in parentheses.
Looking for a surname for a yakuza character rather than a group? The Yakuza Name Generator and the Japanese Last Name Generator cover personal names.
How to choose yakuza Family names
- Match the suffix to the group's size and age: -ikka for an old neighborhood line, -gumi for a working crew, -kai or -rengo for the umbrella above them. Shiranui-ikka under Tenryu-rengo reads as a hierarchy at a glance.
- Give rival groups different suffixes and different sounds so readers can keep them apart. Washio-gumi against the Hozuki Family is clearer than two surnames that both end in -gumi.
- Use a generation number to show history. Sandaime Higa-gumi tells the reader that two bosses came before the current one, which is a story hook in itself.
- In a story, a front company makes the setting feel lived in: a sign reading Fukutomi Shoji or Minegishi Real Estate on the office door, with the group's own name known only to insiders.
- Real groups are mostly a founder's surname plus -gumi or -kai, so search a name before you publish and change it if it matches a real organization or company.
Frequently asked questions
What do -gumi, -kai, -ikka and -rengo mean?
-gumi means group or crew, -kai means association, -ikka means one family and -rengo means federation. In fiction the choice signals scale: Karasawa-gumi sounds like a single crew, Kisaragi-kai like a larger body, and Ichijo-rengo like several groups under one roof.
Are these real yakuza groups?
They are meant as names for fictional organizations in stories, tabletop campaigns and games. Real groups often use a founder's surname with the same suffixes and there are a great many small ones, so a name here can coincide with a real group or business. Search any name you plan to publish.
Which names come from the Like a Dragon games?
Only the entries that say so in parentheses, such as Seiryu Clan (Like a Dragon) and Matsugane Family (Judgment). They are style anchors for fans of Sega's games, and this site has no connection with Sega. The other entries are made-up names in the same style.
I need a surname for a yakuza character, not a group. Where do I look?
Use the Yakuza Name Generator for full personal names and street nicknames, or the Japanese Last Name Generator for surnames with their meanings. A group name here often starts with a surname, so Samejima-gumi also gives you a boss called Samejima.
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All 1,000 yakuza Family names
A: 35 names
- Aburatani Sogyo
- Adatara Clan
- Aizawa Family (Like a Dragon)
- Akabori-kai
- Akagane-gumi
- Akagi Clan
- Akanezaka-gumi
- Akaricho Family
- Akatsukibashi-kai
- Akizuki-kai
- Amagi Clan
- Amagiri-kai
- Amatsu-kai
- Anegakoji-rengo
- Ansei Shokai
- Aobori Alliance
- Aoi Family
- Arakawa Family (Like a Dragon)
- Arashi-gumi
- Arashiyama Family
- Ariake-kai
- Asaborake-kai
- Asagao Family
- Asagiri-kai
- Asama Clan
- Asanagi-kai
- Asanoha-kai
- Atago Clan
- Autumn Tiger Clan
- Awa Association
- Awaji Brotherhood
- Awayuki-kai
- Ayame Family
- Ayanokoji-rengo
- Azami Family
B: 30 names
- Back Alley Alliance
- Bakuroya-ikka
- Bamboo Tiger Family
- Banjo-rengo
- Banrai-rengokai
- Banri-rengo
- Bansei-rengo
- Bathhouse Lane Family
- Benigai Alliance
- Benkei-gumi
- Benten-ikka
- Benzai Kikaku
- Bessho-gumi
- Bingo Alliance
- Bishamon-kai
- Bitchu Alliance
- Bizen Alliance
- Black Pine Alliance
- Black Tide Alliance
- Bojo-rengokai
- Boso Union
- Botan Family
- Breakwater Clan
- Bungo Federation
- Bunkyu Shokai
- Bunsei Sogyo
- Busujima Kogyo
- Butai Kikaku
- Buzen Syndicate
- Byakko-kai
C: 24 names
- Camellia Crest Clan
- Carp Banner Family
- Cherry Storm Family
- Chichibu Clan
- Chidoriya-ikka
- Chigusa-ikka
- Chihaya-ikka
- Chihei-rengokai
- Chikugo Syndicate
- Chikuzen Federation
- Chizuru-ikka
- Chochin-yokocho Family
- Chochinya-ikka
- Chokai Clan
- Chrysanthemum Gate Clan
- Chugoku Kandori-kai
- Chugoku Miyaji-gumi
- Chukyo Council
- Cloud Dragon Alliance
- Crane Wing Family
- Crescent Moon Family
- Crimson Crane Family
- Crow Feather Family
- Customs House Alliance
D: 13 names
- Daichi-rengokai
- Daiju Kikaku
- Daikokuya-ikka
- Daisen Clan
- Darumaya-ikka
- Dewa Alliance
- Dobashi-gumi
- Dojo Construction
- Domoto-gumi
- Doto-kai
- Dragon Scale Alliance
- Dragonfly Crest Clan
- Dry Dock Family
E: 23 names
- East Wind Family
- Ebihara-gumi
- Ebisuya-ikka
- Echigo Federation
- Echigoya-ikka
- Echizen Alliance
- Edo Sando-ikka
- Eight Clouds Alliance
- Eighth-Generation Kanezuka-gumi
- Eighth-Generation Kishibe-ikka
- Eighth-Generation Kobayakawa-kai
- Eighth-Generation Onimaru-gumi
- Eiraku Shoji
- Ekiura-gumi
- Enjoji-gumi
- Enma-gumi
- Enoki Family
- Enoshima Family
- Enrai-rengo
- Enryu-kai
- Etchu Alliance
- Evening Bell Family
- Ezo League
F: 33 names
- Falling Petal Family
- Ferry Landing Family
- Fifth-Generation Kidokoro-gumi
- Fifth-Generation Magara-ikka
- Fifth-Generation Obinata-kai
- Fifth-Generation Oshikiri-gumi
- First Thunder Clan
- Fish Market Family
- Five Petal Family
- Folding Fan Clan
- Fourth-Generation Hagio-gumi
- Fourth-Generation Hioki-ikka
- Fourth-Generation Makabe-gumi
- Fourth-Generation Otori-kai
- Fox Lantern Family
- Fudo Clan
- Fujin-gumi
- Fujinami Family
- Fujishiro Family
- Fukami Family
- Fukuju Sogyo
- Fukuoka Kashii-gumi
- Fukuoka Kushida-kai
- Fukuroku Kosan
- Fukutomi Shoji
- Fumizuki-kai
- Funakoshi Family
- Funatsuki-ikka
- Funayado-ikka
- Futaba-ikka
- Futatsudomoe-ikka
- Futatsugi-ikka
- Fuyutsuki-kai
G: 26 names
- Gadoshita-ikka
- Ganjoji-gumi
- Gassan Clan
- Gekko-kai
- Genroku Kogyo
- Genya Clan
- Ghost Lantern Family
- Ginbori-gumi
- Ginga-rengo
- Ginmaku Kikaku
- Ginnamicho Family
- Ginryu-gumi
- Go-Ryu Clan (Like a Dragon)
- Godaime Amago-ikka
- Godaime Ashina-kai
- Godaime Dan-kai
- Godaime Kikkawa-gumi
- Godaime Zukeran-gumi
- Goemon-ikka
- Gokita-gumi
- Goko-rengokai
- Gokuen Clan
- Gold Leaf Family
- Golden Koi Family
- Gozan-rengo
- Gunjo Clan
H: 87 names
- Hachidaime Kuga-gumi
- Hachidaime Sue-kai
- Hachijo-rengo
- Hachiman-gumi
- Hachisuka Enterprises
- Hachiyo-rengo
- Hagiwara Family
- Hagoromoya-ikka
- Hakata Miyoshi-ikka
- Hakkaku-kai
- Hakkoda Clan
- Hakubo-kai
- Hakugin Clan
- Hakuho Clan (Like a Dragon)
- Hakuro Clan
- Hakuya Clan
- Hamanaka Family
- Hanabiya-ikka
- Hanabori Family
- Hanagata Kikaku
- Hanakoji-ikka
- Hanamachi-kai
- Hannya-kai
- Hanshin Council
- Happo-rengo
- Harbor Dragon Family
- Harima Alliance
- Haruna Clan
- Hasumi Holdings
H, continued
- Hatagoya-ikka
- Hatoba Family
- Hatsushimo-kai
- Hawk and Pine Alliance
- Hayachine Clan
- Hayami Family
- Hayase Family
- Hazuki-kai
- Hebiishi Sogyo
- Hebizuka-gumi
- Hekikai-rengo
- Hibashi-gumi
- Hida Alliance
- Hiei Clan
- Higan Clan
- Higashihama-kai
- Higo Syndicate
- Higure-kai
- Hiiragi Family
- Hikiryo-kai
- Hinagiku-ikka
- Hinamori-kai
- Hinodebashi-ikka
- Hinomoto-gumi
- Hirohata-rengo
- Hiroshima Jike-gumi
- Hisame-kai
- Hisui Clan
- Hizashi-kai
H, continued
- Hizen Syndicate
- Hizume-gumi
- Hoei Sogyo
- Hoki Association
- Hokkaido Torii-gumi
- Hokuriku Kamiizumi Family
- Hokuriku Kehi-kai
- Hokuriku Saigu-gumi
- Hokushin-rengo
- Hokuto-rengo
- Homura-gumi
- Honoo-gumi
- Hoo-kai
- Horai Kogyo
- Horikawa-rengo
- Hoshikage Clan
- Hoshikawa-kai
- Hoshizora-kai
- Hotaka Clan
- Hotaruya-ikka
- Hotei Shokai
- Hototogisu-dori Family
- Hozuki Family
- Hundred Flowers Family
- Hyakka-rengo
- Hyakutake-ikka
- Hyodo Construction
- Hyotanya-ikka
- Hyuga Federation
I: 38 names
- Ibara Family
- Ibuki Clan
- Ichibancho Family
- Ichijo-rengo
- Ichimaru-gumi
- Ichimatsu-gumi
- Ichimonji-ikka
- Ichinose-ikka
- Idaten-gumi
- Iga Brotherhood
- Igeta-ikka
- Ikari Family
- Ikazuchi-gumi
- Iki Brotherhood
- Ikoma Clan
- Imadegawa-rengo
- Inaba Alliance
- Inabikari-gumi
- Inoshita-gumi
- Inugami-gumi
- Inukai-gumi
- Irie Family
- Iron Lotus Clan
- Iron Peony Clan
- Ise Association
- Ishido-gumi
- Ishimine-gumi
- Ishizuchi-gumi
- Isobe Family
- Isurugi-gumi
- Itsutsuji-ikka
- Iwanami-gumi
- Iwashiro-gumi
- Iyo Alliance
- Izayoi-kai
- Izu Federation
- Izumi Syndicate
- Izumo Alliance
J: 11 names
- Jade Carp Clan
- Jinnouchi-gumi
- Jinrai-gumi
- Judaime Hiraga-gumi
- Judaime Kusakabe-gumi
- Judaime Oyamada-kai
- Judaime Utsunomiya-kai
- Judaime Wakasugi-ikka
- Jumonji-kai
- Jurojin Shokai
- Juyo-rengokai
K: 139 names
- Kabukimono-gumi
- Kaede Family
- Kaei Kosan
- Kaga Association
- Kagero-kai
- Kagiya-ikka
- Kagome-kai
- Kagurazaka Finance
- Kaido-rengo
- Kaimon Clan
- Kaimon-rengo
- Kairyu-gumi
- Kaizuka Family
- Kajikawa-gumi
- Kajiya-gumi
- Kakuichi-gumi
- Kakusan-kai
- Kameya-ikka
- Kameyama-gumi
- Kanamaki-gumi
- Kanamine-gumi
- Kanegae Shoji
- Kanegasaki Kogyo
- Kanehachi-kai
- Kaneju-gumi
- Kanemura Enterprises (Like a Dragon)
- Kaneroku-ikka
- Kaneshichi-ikka
- Kangiku-kai
- Kanie-gumi
- Kanmon Union
- Kannazuki-kai
- Kansai Daimonji-kai
- Kansai Kannagi-rengo
K, continued
- Kansai Terakado Family
- Kansei Kikaku
- Kanto Jinguji-kai
- Kanto Miyamae-rengo
- Kanto Monzen-ikka
- Kanzaki-gumi
- Karajishi-gumi
- Karakasaya-ikka
- Karakusa-ikka
- Karasawa-gumi
- Karasuda-gumi
- Karasuma-rengo
- Karasutengu-ikka
- Karigane-gumi
- Karyu-gumi
- Kasumicho-kai
- Katabami-ikka
- Kawachi Syndicate
- Kawagishi-ikka
- Kawaraya-ikka
- Kayano Family
- Kazaguruma-ikka
- Kazahana-kai
- Kazamatsuri-kai
- Kazamichi-gumi
- Kazanin-rengo
- Kazusa Association
- Keihin Council
- Kenno Clan (Like a Dragon)
- Kichijo Shokai
- Kii Alliance
- Kijin Clan (Like a Dragon)
- Kikka-kai
- Kikuichi-gumi
- Kikumaru-gumi
K, continued
- Kikuzuki-kai
- Kikyo Family
- Kinbara Shoji
- Kingfisher Clan
- Kingyoya-ikka
- Kinki Sannomiya-rengo
- Kinki Wakamiya-kai
- Kinko-kai
- Kinryu-gumi
- Kinshi-kai
- Kintaro-ikka
- Kinugasa Enterprises
- Kirimachi-gumi
- Kirisame Family
- Kiritani Family
- Kisaragi-kai
- Kitakata Family (Like a Dragon)
- Kitakoji-rengo
- Kitasanbashi-gumi
- Kitsuneya-ikka
- Koban Shoji
- Kobe Ichinomiya-kai
- Kobe Miyazono Family
- Kobushi Family
- Kogane-dori Alliance
- Kogarashi-ikka
- Kogetsu Clan
- Kogiku-ikka
- Kohaku Clan
- Kokon-rengo
- Kokonoe-ikka
- Komainu-ikka
- Komaya-ikka
- Konjiki Clan
- Kotora-ikka
K, continued
- Kozuchi Shokai
- Kozuke Federation
- Kozuki-kai
- Kuchinashi Family
- Kuginuki-gumi
- Kujakucho-kai
- Kujirai-gumi
- Kujirayama-ikka
- Kujo-rengo
- Kuju Clan
- Kuki-ikka
- Kumade Sogyo
- Kumakura-gumi
- Kumashiro-gumi
- Kumoi-kai
- Kumotori Clan
- Kunugi Real Estate
- Kurama Clan
- Kuramitsu-gumi
- Kuramochi Enterprises
- Kurebayashi Construction
- Kurenai Clan
- Kurobane-gumi
- Kurobori-gumi
- Kurofune Family
- Kusanagi Family
- Kuwabara Family
- Kuyo-rengo
- Kyoho Sogyo
- Kyorei Clan (Judgment)
- Kyudaime Todo-gumi
- Kyudaime Uozumi-ikka
- Kyushu Hakozaki-gumi
- Kyushu Kamishiro-kai
- Kyushu Urabe Alliance
L: 5 names
- Lantern Street Clan
- Lighthouse Hill Clan
- Lightning Crest Family
- Lion Dance Family
- Lower Harbor Family
M: 65 names
- Machiyakko-ikka
- Maizuru-ikka
- Mamushi Kosan
- Maneki Shokai
- Manen Kosan
- Mangetsu-kai
- Manpuku Shokai
- Manryo Shoji
- Mantis Crest Clan
- Marishiten-kai
- Maruhachi-ikka
- Maruju-gumi
- Marukin-kai
- Maruroku-gumi
- Marutake-ikka
- Marutomi-gumi
- Matsugane Family (Judgment)
- Meikaku-kai
- Meikyo Clan
- Midnight Chrysanthemum Society
- Mikawa Alliance
- Mikazuki-kai
- Mikumo-kai
- Mimasaka Association
- Minakami Family
- Minamihama-gumi
- Minamo Family
- Minase Family
- Minatogai-gumi
- Minatoya-ikka
- Minazuki-kai
- Minegishi Real Estate
M, continued
- Mino Alliance
- Misaki Family
- Mitake Clan
- Mitsubiki-gumi
- Mitsuboshi-rengo
- Mitsudomoe-gumi
- Mitsumine-ikka
- Mitsurugi-ikka
- Mitsuya-ikka
- Mizuchi-kai
- Mizushima Family
- Mochizuki-kai
- Mokko-kai
- Moko-gumi
- Mokuren Family
- Momochi-ikka
- Momoi-ikka
- Momose Family
- Momozono-ikka
- Monsoon Family
- Moonlit Carp Clan
- Morning Glory Clan
- Mountain Tiger Clan
- Mugen Clan
- Mumyo Clan
- Murakumo-kai
- Musashi Federation
- Muso Clan
- Mutsu Alliance
- Mutsuki-kai
- Mutsuura-ikka
- Myogi Clan
- Myojo-rengo
N: 53 names
- Nabezuru-ikka
- Nadaoka Family
- Nadeshiko Family
- Nagato Alliance
- Nagatsuki-kai
- Nagisa Family
- Nagoya Kamigaki Family
- Nagoya Miwa-gumi
- Nakamikado-rengo
- Nakasendo League
- Nakasuji-kai
- Namahage-gumi
- Namihira Family
- Nanadaime Hiki-ikka
- Nanadaime Kishima-gumi
- Nanadaime Onikobe-kai
- Nanadaime Sugi-ikka
- Nanakusa-ikka
- Nanao-ikka
- Nanase-ikka
- Nanboku-rengo
- Nanbu Union
- Naniwa Kujaku-kai
- Naniwaya-ikka
- Nanjo-rengo
- Nantai Clan
N, continued
- Nanten-rengo
- Naraku Clan
- Narukami-kai
- Natsume-kai
- Nezu Enterprises
- Nidaime Akazuka-gumi
- Nidaime Gushiken-kai
- Nidaime Nagase-ikka
- Nidaime Shirozuka-kai
- Night Market Clan
- Niigata Miyake-gumi
- Nijo-rengo
- Ninomiya-ikka
- Ninth-Generation Ibusuki-gumi
- Ninth-Generation Oniyama-kai
- Ninth-Generation Tsurugi-ikka
- Nio-gumi
- Nirasaki Family
- Nishihama-ikka
- Nishikibashi-kai
- Nogiku-ikka
- Noren-gai Alliance
- Norikura Clan
- North Star Alliance
- Noto Alliance
- Nowaki-ikka
- Nue-kai
O: 26 names
- Oban Sogyo
- Oboromachi-kai
- Oborozuki-kai
- Ogami Construction
- Okamizawa-gumi
- Oki Brotherhood
- Okitsu Family
- Old Canal Family
- Omine Clan
- Omodaka-gumi
- Omokage Clan
- Onigashima-ikka
- Onigawara-gumi
- Oniko-kai
- Onizuka Kogyo
- Ontake Clan
- Orihara Enterprises
- Orochi-gumi
- Oryu-gumi
- Osaka Mido-gumi
- Osaka Sarume-ikka
- Osaka Tenjinbashi-kai
- Oshio Family
- Osumi Syndicate
- Otokodate-kai
- Owari Alliance
P: 4 names
- Paper Crane Syndicate
- Peony Lion Clan
- Pine and Crane Alliance
- Plum Blossom Alliance
R: 41 names
- Raiden-gumi
- Raijin-gumi
- Raiko-kai
- Raimei-kai
- Rain Dragon Clan
- Rainmaker Family
- Rairyu-gumi
- Raiun-kai
- Rangiku-kai
- Rasetsu Clan
- Rashomon-gumi
- Red Bridge Clan
- Renge Family
- Reppu-gumi
- Rikugo-rengo
- Rindo Holdings
- Rinkai-rengo
- Rising Dragon Family
- River Crane Family
- Riverside Stalls Clan
R, continued
- Rokkaku-ikka
- Rokko Clan
- Rokuban Pier Family
- Rokudaime Hatano-kai
- Rokudaime Ouchi-gumi
- Rokudaime Shimabukuro-gumi
- Rokudaime Yuki-ikka
- Rokujo-rengo
- Rokuyo-rengokai
- Ruri Clan
- Ryudo Family (Like a Dragon)
- Ryuen Clan
- Ryuga-gumi
- Ryugu-kai
- Ryuko-kai
- Ryumon-kai
- Ryuo-kai
- Ryusen-kai
- Ryusui-kai
- Ryuto-gumi
- Ryuzoji-gumi
S: 140 names
- Sado Federation
- Sagami Family
- Sagarifuji-kai
- Sagiri-kai
- Saijo-rengo
- Sakaki Family
- Samejima-gumi
- Sanbashi-gumi
- Sandaime Arakaki-gumi
- Sandaime Higa-gumi
- Sandaime Kirino-kai
- Sandaime Okochi-kai
- Sandaime Rusu-ikka
- Sanga-rengo
- Sango Clan
- Sanin League
- Sankai-rengokai
- Sanuki Alliance
- Sanzan-rengo
- Sapporo Kamio Family
- Sapporo Mikami-kai
- Sarukawa-gumi
- Sasai Family (Like a Dragon)
- Sasarindo-kai
- Sasaya-ikka
- Satsuma Alliance
- Sawatari Family
- Sayagata-kai
- Sazanami Family
- Sazanamicho-gumi
- Sazanka-kai
- Seawall Alliance
- Second-Generation Aonuma-gumi
- Second-Generation Banba-gumi
- Second-Generation Kijima-kai
S, continued
- Second-Generation Mibu-ikka
- Seigaiha-rengo
- Seiryu Clan (Like a Dragon)
- Seiten-kai
- Seizan-rengo
- Sekiryu-kai
- Senba Shoji
- Senbazuru-ikka
- Sendai Kumano-gumi
- Sendai Miyashiro Family
- Senjo-rengokai
- Sennari-ikka
- Senpu-kai
- Senri-rengo
- Senryo Kogyo
- Sensuya-ikka
- Setonaikai Union
- Setouchi Family
- Setouchi Miyabe-gumi
- Settsu Syndicate
- Seven Stars Clan
- Seventh-Generation Akamatsu-gumi
- Seventh-Generation Kurozuka-gumi
- Seventh-Generation Nikaido-kai
- Seventh-Generation Uragami-ikka
- Shachihoko-gumi
- Shibata Family (Like a Dragon)
- Shibusawa Family (Like a Dragon)
- Shichifuku Shoji
- Shichisei-rengo
- Shichiyo-rengokai
- Shiden-gumi
- Shien Clan
- Shigure-kai
- Shigurezaka Family
S, continued
- Shiho-rengo
- Shijima-ikka
- Shijo-rengokai
- Shikada-gumi
- Shikkoku Clan
- Shikoku Inbe-ikka
- Shikoku Negi-gumi
- Shikoku Yashiro-kai
- Shima Brotherhood
- Shimosa Association
- Shimotsuke Federation
- Shimotsuki-kai
- Shinano Alliance
- Shingetsu-kai
- Shinju Clan
- Shinkai-rengokai
- Shinku Clan
- Shinminato-kai
- Shinogi Kosan
- Shinomiya-ikka
- Shinonome-kai
- Shiohigata-ikka
- Shiokaze-kai
- Shiomachi-kai
- Shiomi Family
- Shiosai Family
- Shiozaki Family
- Shippu-kai
- Shiranami Family
- Shirane Clan
- Shiranui-ikka
- Shiratsuyu-kai
- Shirobori Family
- Shirokane Enterprises
- Shiryu-kai
S, continued
- Shishikura-gumi
- Shiun-kai
- Shiwasu-kai
- Shobu Family
- Shokaku-kai
- Shonan Union
- Shura Clan
- Shuten-gumi
- Silver Heron Family
- Sixth-Generation Aramaki-gumi
- Sixth-Generation Ijuin-ikka
- Sixth-Generation Katakura-gumi
- Sixth-Generation Kinjo-kai
- Snow Crane Family
- Someya Family (Like a Dragon)
- Soramachi-kai
- Soryu-kai
- South Wharf Alliance
- Station Front Alliance
- Storm Lantern Clan
- Storm Petrel Family
- Sugimori Family
- Suiko-kai
- Sukeroku-ikka
- Sumeragi Family
- Sumiyama-gumi
- Summer Storm Family
- Suo Association
- Suruga Alliance
- Susanoo-kai
- Suzaku-kai
- Suzukake-dori Family
- Suzumeya-ikka
- Suzuran Family
- Swallowtail Family
T: 106 names
- Taiga-rengo
- Taihei Association (Like a Dragon)
- Tairiku-rengo
- Tajima Alliance
- Takagari-gumi
- Takamine Clan
- Takanashi-gumi
- Takanoha-gumi
- Takarabe Shoji
- Takarabune Kogyo
- Takarada Kogyo
- Takatori-gumi
- Takigawa Family
- Tamahagane-gumi
- Tamakoshi Enterprises
- Tamashiro Family (Like a Dragon)
- Tamaya-ikka
- Tanba Syndicate
- Tancho-kai
- Tango Syndicate
- Tanukiya-ikka
- Tanzawa Clan
- Tasogare-kai
- Tatara-gumi
- Tateyama Clan
- Tatsugami-ikka
- Tatsumaki-gumi
- Tatsumi Family
- Tatsunami-gumi
- Tenchi-rengo
- Tenka Clan
- Tenku-rengokai
- Tenma-rengo
- Tenmei Clan
- Tenpo Shoji
T, continued
- Tenrai Clan
- Tenro-rengo
- Tenryu-rengo
- Tenth-Generation Hirate-ikka
- Tenth-Generation Mogami-gumi
- Tenth-Generation Shirato-kai
- Tetsuka-gumi
- Third-Generation Akanuma-kai
- Third-Generation Gamo-ikka
- Third-Generation Hanamura-gumi
- Third-Generation Jonouchi-gumi
- Thousand Cranes Alliance
- Three Waves Alliance
- Thunder Carp Family
- Thunderhead Alliance
- Tidal Dragon Family
- Tiger Lily Family
- Tiger Stripe Family
- Tiger's Eye Clan
- Tohoku Hafuri-ikka
- Tohoku Shiogama-kai
- Tohoku Ujiie-gumi
- Toiya-ikka
- Tokai Atsuta-kai
- Tokai Jinnai Family
- Tokai Shinmei-gumi
- Tokito Real Estate
- Tokoyo Clan
- Tokura-ikka
- Tokyo Hongo-ikka
- Tokyo Jinno Family
- Tokyo Yushima-kai
- Tomari Family
- Tomikuji Kosan
- Tominokoji-rengo
T, continued
- Tomioka Kogyo
- Tomoeya-ikka
- Tomoshibi-dori Family
- Torahime-ikka
- Torajima-gumi
- Toramaru-gumi
- Torigoe-gumi
- Torikai-gumi
- Tosa Alliance
- Totomi Alliance
- Tozai-rengo
- Tsubaki Family
- Tsubamecho-gumi
- Tsubameya-ikka
- Tsuchigumo-gumi
- Tsuchiura-gumi
- Tsugaru Union
- Tsujiura-ikka
- Tsukibori-kai
- Tsukikage Clan
- Tsukimori-kai
- Tsukinomiya-kai
- Tsukioka-kai
- Tsukishima Family
- Tsukishiro-kai
- Tsukuba Clan
- Tsukuyomi-kai
- Tsumuji-kai
- Tsurukame-ikka
- Tsurumaru-gumi
- Tsurumi-gumi
- Tsuruya-ikka
- Tsushima Brotherhood
- Tsuyukusa-kai
- Twin Tigers Alliance
- Typhoon Gate Family
U: 26 names
- Uchide Sogyo
- Ueno Seiwa Clan (Like a Dragon)
- Ukai-gumi
- Umakoshi-gumi
- Umebachi-ikka
- Umemiya Family
- Umezono-rengo
- Unabara Family
- Under-the-Tracks Family
- Unkai-rengokai
- Unkaku-kai
- Unryu-kai
- Unzen Clan
- Uragashi-ikka
- Uramatsu-rengo
- Uraminato Family
- Uramon-gumi
- Uramoto Family
- Urashima Family
- Uroko-gumi
- Ushijima-gumi
- Ushio Family
- Usugumo-kai
- Usurai-kai
- Usuzumi Clan
- Uzuki-kai
W: 16 names
- Wakasa Alliance
- Wanibe Kogyo
- Wanibuchi-gumi
- Warehouse Row Family
- Washimi-gumi
- Washio-gumi
- Washizu-gumi
- Watase Family (Like a Dragon)
- Wave Crest Clan
- Whirlwind Clan
- White Chrysanthemum Family
- White Heron Clan
- Willow Bridge Family
- Winter Peony Family
- Wisteria Crest Family
- Wolf Moon Clan
Y: 49 names
- Yachigusa-ikka
- Yaegaki-rengokai
- Yaegashi-ikka
- Yaegiku-kai
- Yagasuri-ikka
- Yagyu-ikka
- Yakumo-kai
- Yamagasa Family (Like a Dragon)
- Yamai Syndicate (Like a Dragon)
- Yamajin-kai
- Yamaju-gumi
- Yamakyu-ikka
- Yamaroku-kai
- Yamiyo Clan
- Yanagi Family
- Yanagibashi-ikka
- Yanagibori-ikka
- Yanagiwara-rengo
- Yanagiya-ikka
- Yasaka-ikka
- Yasha Clan
- Yatagarasu-kai
- Yatsuhashi-ikka
- Yayoi-kai
Y, continued
- Yoake-kai
- Yoimachi-gumi
- Yoizaki Family
- Yoizuki-kai
- Yokohama Kamijo-gumi
- Yokohama Katori-kai
- Yokomizo-gumi
- Yomei Alliance (Like a Dragon)
- Yondaime Chinen-gumi
- Yondaime Maeba-ikka
- Yondaime Oniwa-ikka
- Yorozu-ikka
- Yoshino Clan
- Yotsuboshi-rengokai
- Yotsume-ikka
- Yotsuya-ikka
- Yugiri-kai
- Yukawa Trading
- Yukiakari-kai
- Yukimura-kai
- Yukishiro-kai
- Yumeji Kikaku
- Yunagi-kai
- Yuyake-kai
- Yuzuriha Family