The 26th Battalion (New Brunswick) CEF, was an infantry battalion of the Canadian Expeditionary Force during World War I. 

The 26th Battalion recruited throughout New Brunswick and was mobilized at Saint John, New Brunswick. 

The battalion was authorized on 7 November 1914 and embarked for Britain on 15 June 1915. It disembarked in France on 16 September, where it fought as part of the 5th Canadian Infantry Brigade, 2nd Canadian Division in France and Flanders until the end of the war. The battalion was disbanded on 30 August 1920