Kotoki Zayasu (座安 琴希, Zayasu Kotoki, born January 11, 1990) is a Japanese volleyball player who plays for RC Cannes.

She played for the Japan national team during the 2016 Summer Olympics.

While in high school Kotoki served as captain of the team, and played as setter.

[1] In March 2011 Kotoki was selected a member of national team,[2] for which she played in the Montreux Volley Masters and the FIVB Volleyball Women's World Cup.

This biographical article relating to volleyball in Japan is a stub.