Gerald Koh Mun Yew (born 20 June 1978) is a Singaporean former backstroke, freestyle and medley swimmer.

He competed in five events at the 1996 Summer Olympics.

[1] Koh won the bronze medal in the 200m backstroke at the 2001 Southeast Asian Games.

[2] Koh retired from competitive swimming in 2003.

[2] This biographical article related to a Singaporean swimmer is a stub.