St Ambrose College is an 11–18 Christian Brothers' Roman Catholic boys' grammar school in Hale Barns, Altrincham, Greater Manchester, England. It was founded in 1946 by Joseph Robertson. In 2012 the school became an academy, and was completely re-built. Upon leaving the college, boys are referred to as ‘Old Ambrosians’ and many go on to join the Old Boys' Association.