Yochanan Afek (Hebrew: יוחנן אפק; born Yohanan Kopelovich, 16 April 1952) is an Israeli chess player, composer, trainer and arbiter.

[2] Afek won the prestigious Art chess tournament in Amsterdam organized by the foundation for aristocratic art and culture (stichting Aristocratische Cultuur en Kunst) where various grandmasters participated.

The second chapter of Tibor Karolyi's 2009 book Genius in the Background is devoted to him.

Afek described pioneering Israeli master Moshe Czerniak as “my teacher”.

This biographical article relating to an Israeli chess figure is a stub.