The 5th Battalion Canadian Mounted Rifles were a mounted infantry unit of the Canadian Expeditionary Force during World War I. The unit was raised from volunteers of the 7th and XIth (Canadian) Hussars from the Eastern Townships of Quebec. Formed in 1915, they were transported to England later that year. In 1916, they converted to an infantry battalion attached to the 8th Canadian Infantry Brigade, 3rd Canadian Division, C.E.F. (later the Canadian Corps). The battalion saw action in France and Flanders between 1916 and 1918.