- Union musicale de Sherbrooke
- Union Nationale
- Union Station
- Unions
- Musicians' Unions
- Unitarian Service Committee of Canada
- Unitarians
- United Automobile Workers of Canada
- United Church of Canada
- United Conservative Party
- United Empire Loyalists' Association of Canada
- United Farm Women of Alberta
- United Farmers of Alberta
- United Farmers of Canada
- United Farmers of Manitoba
