Chow Ting Yu (Chinese: 周定宇; pinyin: Zhōudìngyǔ, born 1977), known professionally as Marvel Chow, is a retired professional wushu taolu athlete and actor from Hong Kong.

In his youth, Chow wanted to pursue a career in badminton and decided to learn wushu when he was 14 on the side to help him improve on his main sport.

He went to train at the Beijing Sport University and became a member of the Hong Kong Wushu Team in 1995.

[4][5] Two years later at the 2001 World Wushu Championships, he was a double silver medalist in jianshu and qiangshu.

[7][8] After retiring from competitive wushu, Chow started practicing wing chun which eventually led to his acting roles starting with Ip Man in 2008.