Caulfield Grammar School is an independent, co-educational, Anglican, day and boarding school, located in Melbourne, Victoria, Australia. Founded in 1881 as a boys' school by the Reverend Joseph Henry Davies, Caulfield began admitting girls exactly one hundred years later. The school amalgamated with Malvern Memorial Grammar School (MMGS) in 1961, with the MMGS campus becoming Malvern Campus.
Caulfield has three day campuses in Victoria, Caulfield (Years 7–12), Wheelers Hill (Kindergarten–Year 12), and Malvern House (Kindergarten–Year 6). It has an outdoor education campus at Yarra Junction, and a student centre in Nanjing, China where the Year 9 internationalism programme is conducted. The Nanjing Campus became the first overseas campus for an Australian high school, and Australian Prime Minister John Howard and then-Victorian Premier Jeff Kennett both sent formal congratulations letters to Caulfield on the campus' establishment. Caulfield is the only Melbourne-based APS school to provide boarding for both boys and girls, with 95 boarding students, and is one of the largest school's in Victoria, currently catering for approximately 2,850 students.