Seiichi
Seiichi is a masculine Japanese given name. Notable people with the name include:
- Seiichi Akamine, Japanese karateka
- Seiichi Endo, Japanese cult member
- Seiichi Eto, Japanese politician
- Seiichi Furuya, Japanese photographer
- Seiichi Hatano, Japanese philosopher
- Seiichi Hishikawa, Japanese art director
- Seiichi Iju, Japanese karateka
- Seiichi Ishii, Japanese video game designer
- Seiichi Itō, Imperial Japanese Navy admiral
- Seiichi Iwao, Japanese academic, historian and writer
- Seiichi Kanai, Japanese golfer
- Seiichi Kaneta, Japanese politician
- Seiichi Kuno, Japanese general
- Seiichi Makita, Japanese footballer
- Seiichi Miyake, Japanese inventor
- Seiichi Morimura, Japanese writer
- Seiichi Motohashi, Japanese photographer
- Seiichi Negishi, Japanese footballer
- Seiichi Niikuni, Japanese poet and painter
- Seiichi Ogawa, Japanese footballer
- Seiichi Ōmura, Japanese politician
- Seiichi Osanai, Japanese sport wrestler
- Seiichi Ota, Japanese politician
- Seiichi Saito, Japanese footballer
- Seiichi Sakiya, Japanese footballer
- Seiichi Shima, Japanese baseball player and soldier
- Seiichi Sugano, Japanese aikidoka
- Seiichi Suzuki, Japanese figure skater
- Seiichi Tagawa, Japanese politician
- Seiichi Takamura, Japanese handball player
- Takebayashi Seiichi, Japanese photographer
- Seiichi Tanabe, Japanese actor
- Seiichi Tanaka, American musician
- Seiichi Tejima, Japanese educator
- Seiichi Tobata, Japanese scientist
- Seiichi Uchikawa, Japanese baseball player
- Seiichi Yamamoto, Japanese musician
