Ippei (written: 一平) is a masculine Japanese given name. Notable people with the name include:
Ippei Kaneko (金子 一平, 1913–1989), Japanese politician
Ippei Kojima (小島 一平, born 1944), Japanese badminton player
Ippei Kokuryo (國領 一平, born 1993), Japanese footballer
Ippei Kuri (九里 一平, born 1940), Japanese manga artist and anime producer
Ippei Saga (佐賀 一平, born 1980), Japanese footballer
Ippey Sinodzuka (born 1995), Russian-Japanese footballer
Ippei Watanabe (渡辺 一平, born 1969), Japanese footballer
Ippei Watanabe (swimmer) (渡辺 一平, born 1997), Japanese swimmer
