The 11th Battalion, CEF, an infantry battalion of the Canadian Expeditionary Force, was authorized on 10 August 1914 and embarked for Great Britain on 30 September 1914. It was redesignated as the 11th Reserve Infantry Battalion, CEF, on 29 April 1915, to provide reinforcements to the Canadian Corps in the field. On 4 January 1917, its personnel, along with the personnel of the 100th Battalion (Winnipeg Grenadiers), CEF, were absorbed by a new 11th Reserve Battalion, CEF. The battalion was disbanded on 12 October 1917.
The Battalion recruited in Prince Albert, Moose Jaw, Regina and Saskatoon, Saskatchewan and Winnipeg, Manitoba and mobilized at Camp Valcartier, Quebec.
The 11th Reserve Battalion formed part of the Canadian Training Depot at Tidworth Camp on the Salisbury Plain.
The 11th Battalion, CEF, had three Officers Commanding:Lt. Col. R. Burritt, 22 September 1914 – 23 August 1915
Lt. Col. A. Dulmage, 23 August 1915 – 15 September 1915
Lt. Col. A.E. Carpenter, 26 November 1915 – 27 April 1916
Lt. Col. P. Walker, 8 May 1916 – 4 January 1917
The Battalion was awarded the battle honour "THE GREAT WAR 1914-17".
The 11th Battalion, CEF, is perpetuated by the The Winnipeg Grenadiers, currently on the Supplementary Order of Battle.