Geoffrey Robin Cheah[1] (Chinese: 謝旻樹; born 10 November 1990) is a Hong Kong competitive swimmer.

He qualified to the 2016 Summer Olympics in Rio de Janeiro, and was selected to represent Hong Kong in the men's 50 metre freestyle.

[3][4] He attended West Island School in Hong Kong.

He broke Hong Kong age group and junior records in all three events.

[7] This biographical article related to a Hong Kong swimmer is a stub.