The historic Humboldt Post Office building is located at the corner of Main Street and 6th Avenue in Humboldt, Saskatchewan, Canada.

The building is 2+1⁄2 storeys with a 4-storey bell and clock tower.

Designed by the chief architect of the Department of Public Works, David Ewart, the building is the last surviving of a series of very similar buildings under a common theme on the prairies.

[2] The building was designated a National Historic Site of Canada in 1977.

[5] The building is currently used to house the Humboldt & District Museum and Gallery.