Trinity Grammar School, Kew (abbreviated to TGS) is an independent Anglican day and boarding school for boys, located in Kew in Melbourne, Australia. The school was founded at a meeting of several high-ranking church figures on 14 November 1902. It opened in 1903, operating out of the Holy Trinity Church. Trinity is a founding member of the Associated Grammar Schools of Victoria (AGSV). The school has over 1500 students and approximately 20 boarding students.