Sidney K. Chu (; born 22 July 1999 in Hong Kong) is a short track speed skater representing Hong Kong. Chu was Hong Kong's flag-bearer at the 2022 Winter Olympics in Beijing, China. Chu is currently the executive director of the Hong Kong Speed Skating Academy
In February 2022, Chu participated his first Olympic Games in Beijing, China. He ranked 24th out of 32 competitors in the men's 500m short track speed skating at that Olympics.