Marcellin College Randwick is a systemic Roman Catholic, secondary, day school for boys, located in Randwick, a south-eastern suburb of Sydney, New South Wales, Australia. Conducted by the Marist Brothers and founded in 1923, Marcellin is a school of the Archdiocese of Sydney, and currently caters for approximately 962 students from Years 7 to 12. The college is affiliated with the Association of Marist Schools of Australia (AMSA), and Metropolitan Catholic Colleges (MCC).