23rd Battalion may refer to: * 23rd Reserve Battalion, CEF, an infantry unit in the Canadian Expeditionary Force during the First World War * 23 Service Battalion, a Combat Service Support unit of The Canadian Forces Reserve since 1965 * 23rd Battalion (Australia), an infantry battalion of the Australian Army that served in World War I * 2/23rd Battalion (Australia), an infantry battalion of the Australian Army that served in World War II * 23rd Battalion (New Zealand), a World War II infantry battalion This disambiguation page lists articles about military units and formations which are associated with the same title. If an internal link referred you to this page, you may wish to change the link to point directly to the intended article.