John Hui Kin-yip (born 3 January 1978) is a Hong Kong former professional tennis player.

[2] Hui, who was a top-100 junior,[3] twice featured in the singles main draw of the ATP Tour's Hong Kong Open, losing his first round matches to Pat Rafter in 1996 and Marat Safin in 2001.

A doubles bronze medalist at the 2001 National Games of China (with Melvin Tong), Hui was a Hong Kong representative at the 2002 Asian Games in Busan and played in 14 Davis Cup ties for Hong Kong.

[4] In his Davis Cup career, he won a total of three singles and five doubles rubbers.

In 2003, he married Jacklyn Fu, a former tennis player on the international junior circuit, with whom he has 3 children, Brian, Nicola, and Alex.