Holy Trinity Anglican Church is a historic Carpenter Gothic style Anglican church building located on the banks of the Churchill River in Stanley Mission, a community in the Lac La Ronge First Nation and Lac La Ronge Provincial Park in Saskatchewan, Canada.

Robert Hunt, an English missionary who founded Stanley Mission in 1851[1] with the permission of the Hudson's Bay Company, it was built between 1854 and 1860 by local Cree craftsmen using locally cut lumber as well as hardware and stained glass that Hunt had brought from England.

The church was at one time the centre of an active missionary complex that included nearly 30 supporting buildings and a cemetery.

Although not the seat of a bishop, it has been called a cathedral because of its massive size with a tall central nave and elaborate spire.

[3][4][5] Holy Trinity Anglican Church was designated a National Historic Site of Canada in 1970.