| Eiko Koike | |
|---|---|
| Born | 20 November 1980 Tokyo, Japan | 
| Occupation | Actress | 
| Years active | 1998–present | 
| Height | 1.66 m (5 ft 5 1⁄2 in) | 
| Spouse(s) | Wataru Sakata (m. 2007) | 
Eiko Koike (小池 栄子 Koike Eiko?, born November 20, 1980) is a Japanese actress.
Koike starred in Kunitoshi Manda's film The Kiss. She appeared in Kiyoshi Kurosawa's 2012 television drama Penance. Koike co-starred in Junji Sakamoto's A Chorus of Angels with Sayuri Yoshinaga. She also co-starred in Masanori Tominaga's Vengeance Can Wait with Takayuki Yamada. She was once nominated for Best Supporting Actress at Japan Academy Prize, for her outstanding performance in the film Rebirth.