Cheng Tsz Sum (Chinese: 鄭子森; born 20 March 1999) is a Hong Kong professional footballer who currently plays as a left back or a left midfielder for Hong Kong Premier League club Rangers, on loan from Tai Po.
On 5 August 2017, Cheng was unveiled as part of Lee Man's inaugural squad.[1]
On 31 July 2018, Cheng was named as one of Tai Po's summer signings.[2]
On 1 July 2020, Eastern announced that Cheng would join the club.[3]
On 6 September 2021, Cheng rejoined Rangers.[4]
On 8 August 2022, Cheng returned to Tai Po.[5]
On 29 July 2025, Cheng joined Rangers on loan for the 2025–26 season.[6]
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