St. Mary's Catholic College Casino is a co-educational Catholic secondary school in Casino, New South Wales, Australia.

It was founded by the Marist Brothers in 1946.

[3] In 2016, St. Mary's team took first place in the Australian Youth Rocketry Challenge.

[4][5] In 2017, the school was allotted a place on the Australian and New Zealand Army Corps memorial tour.

[6][7] There are four houses at St Mary's Catholic College:[8][9]