San Yu Adventist School (SYAS) is a private Christian school in Singapore which caters to students from ages 7 (Primary 1) to 16/17 (Secondary 4, GCE 'O' Levels). It follows the local education system and is fully owned and operated by the Singapore Adventist Conference. The current school was a result of the merger of two Adventist schools: the English-medium Seventh-day Adventist School previously located in Upper Serangoon Road and the Chinese-medium San Yu High School. It is a part of the Seventh-day Adventist education system, the world's second largest Christian school system.