St Gregory's College (SGC or Greg's) is a Catholic, secondary, day and boarding, agricultural school for boys, located in Gregory Hills, a south-western suburb of Sydney, New South Wales, Australia. Founded on 3 February 1926 and conducted by the Marist Brothers since 1929, St Gregory's has a non- selective enrolment policy accounting for the large number of students and currently caters for approximately 1100 students from Years 7 to 12, including 180 boarders.