Eiki is a given name. Notable people with the given name include:
Eiki Berg (born 1970), Estonian scientist, professor, and politician Eiki Eiki, the professional name of Eiko Naitō (born 1971), Japanese manga artist Eiki Kitamura (born 1981), Japanese actor Eiki Matayoshi (born 1947), Japanese contemporary writer Eiki Miyazaki (born 1955), Japanese equestrian Eiki Mori (born 1976), Japanese photographer Eiki Nestor (born 1953), Estonian politician Eiki Takahashi (born 1992), Japanese racewalker