Mark Tan

Tan graduated from Diocesan Boys' School and Hong Kong Baptist University. In 2009, he won a Dreams Come True scholarship which allowed him to complete his high school studies in Britain at the Brooke House College Football Academy with all costs covered. Tan signed a professional contract with Peterborough United in January 2010 after a six-week trial.

In 2013, Tan returned to Hong Kong and signed with Yokohama FC Hong Kong. In 2015, Tan joined Pegasus. Stating Tan was not ready to move to a big club yet, he joined Tai Po in 2016. He earned the Best Young Player award for the second consecutive year during the 2016-17 season. Following two years at Tai Po, Tan signed a three-and-a-half-year contract with Chinese Super League side Guangzhou R&F on 13 July 2018. On 26 October 2019, Tan made his debut for Guangzhou R&F in Chinese Super League after substituting Zou Zheng in the 87th minute during the game against Hebei China Fortune. He became a regular first team member in the 2021 season in which he was deployed as an attacking midfielder in several occasions. On 21 April 2023, Tan returned to Hong Kong and joined Kitchee. He signed a two-year contract until 2025.

Tan is a member of the Hong Kong national under-23 football team that plays in the 2014 Asian Games. He broke his leg in the match against Bangladesh and has to return to Hong Kong for treatment, missing the last 16 clash against hosts South Korea. He made his full international debut in a friendly against Thailand on 9 October 2015. Tan scored his first international goal on 13 June 2017 against North Korea. On 13 July 2018, Tan's club Guangzhou R&F confirmed that they would release him to participate in the 2018 Asian Games. On 26 December 2023, Tan was named in Hong Kong's squad for the 2023 AFC Asian Cup.

Tan's elder brother Tan Ka Lok was also a professional footballer. He played for First Division clubs Eastern District and Sun Hei.