Tianjin No. 3 High School () is located on Xiangdong Road in Hongqiao District of Tianjin, China. The school was established in 1901 and is the oldest modern public middle school in Tianjin. The school was founded in 1901 as Hebei Provincial No. 1 High School () before being renamed to Tianjin No. 3 High School () in 1949. The school had various names over the years, including Bell Tower Middle School. In 1982, UNDP and UNESCO provided the school with new equipment.
It is a key high school () in Tianjin.