Yamaguchi (disambiguation)
Yamaguchi stands for:
- Yamaguchi , a city and the administrative seat of Yamaguchi Prefecture
- Yamaguchi Prefecture , a Japanese prefecture
- Yamaguchi (family name) , a Japanese family name
- the later name of the fief Chōshū (Han)
- Yamaguchi process , macrolactonization of hydroxycarboxylic acids
- Yamaguchi-gumi , a yakuza group
- Yamaguchi Bicycles , a Rifle, Colorado company that makes custom bike frames
