St Paul's Catholic College (formerly named Christian Brothers College, Manly) is a diocesan Catholic secondary day school for boys, located in Manly, on the Northern Beaches of Sydney, New South Wales, Australia. The college was founded by the Congregation of Christian Brothers in 1929, and since 1982 has been conducted by lay staff appointed by the Diocese of Broken Bay.

As a regional secondary school, St Paul's provides for the boys of the Catholic parishes of Manly Freshwater (including Curl Curl, Fairlight, Freshwater, Manly), North Harbour (including Allambie, Balgowlah, Clontarf, Manly Vale, Seaforth), and Warringah (including Beacon Hill, Brookvale, Cromer, Dee Why, and Narraweena).