St. Mary's College Namagunga is an all-girl boarding secondary school located in Mukono District in Uganda.

The school is affiliated with the Roman Catholic Diocese of Lugazi.

[1] The school is on the Kampala–Jinja Highway, approximately 42 kilometres (26 mi), by road, east of Kampala, Uganda's capital and largest city.

[2] Its location is approximately 8 kilometres (5 mi), by road, west of Lugazi, the nearest town,[3] and approximately 18 kilometres (11 mi), by road, east of Mukono, where the district headquarters are located.

[5] The college was founded in February 1942 by Mother Mary Kevin of the Franciscan Sisters for Africa.