The Kowloon Tong School (Secondary Section) (; KTSSS) is a co-educational secondary school in Hong Kong. Located at 10 Surrey Lane in Kowloon Tong, the school was founded in 1962 as private English language school. It was changed to a co-educational aided secondary school in 1978.
The school is not a "through-train" school that links with the Kowloon Tong School (Primary Section).