Tak Sun Secondary School (TSSS; Chinese: 德信中學 demonym: Tak Sun Boy) is a directly subsidized, English as Medium of Instruction, boys' school located at Tai Shui Hang, Ma On Shan, Sha Tin, New Territories, Hong Kong. The institution was established in 2000.

Tak Sun is founded on Catholic Christian values, incorporates the involvement of parents in the education of their children and encourages their own personal growth as parents.

In March 2006, the school invited a comprehensive review of its activities by the Faculty of Education of the University of Hong Kong. The resulting report was generally positive, but identified deficiencies in academic rigour that required addressing.

The school has a multimedia learning center, student activity center, a comprehensive learning center, language rooms, auditorium, laboratories, computer rooms, a library, a fitness room, football court, handball court, basketball court, an art room,badminton courts, athletics track and a small chapel.

Name	Chinese Name	Description
Gordon Ho Hoi Tung	何凱桐	Contract bridge player; Representing Hong Kong to participate the Bridge at the 2018 Asian Games and won the silver medal.

Name	Chinese Name	Description
Rev. Fr. Henry Chau Chin Heng	周阡行	Roman Catholic Priest of the Diocese of Hong Kong; Assistant Parish Priest of St. Thomas the Apostole Church, Tsing Yi; First alumni to be ordained as Roman Catholic Priest.
Rev. Fr. Billy Ng Wai Leung	伍偉良	Roman Catholic Priest of the Prelature of Opus Dei; Second alumni and First teacher to be ordained as Roman Catholic Priest.

• Official website

22°24′37″N 114°13′19″E / 22.41031°N 114.22189°E / 22.41031; 114.22189