The 51st Battalion (Edmonton), CEF, was an infantry battalion of the Canadian Expeditionary Force during the Great War. The 51st Battalion was authorized on 7 November 1914 and embarked for Great Britain on 18 April 1916. It provided reinforcements for the Canadian Corps in the field until 13 November 1916, when it was reorganized as a garrison duty battalion. On 22 June 1917, its personnel were absorbed by the various regimental depots. The battalion was disbanded on 15 September 1920.