218th may refer to:

218th (Edmonton) Battalion, CEF, was a unit in the Canadian Expeditionary Force during the First World War 218th Infantry Division (Germany), a large military unit that served in World War II 218th Maneuver Enhancement Brigade (United States), a maneuver enhancement brigade of the United States Army National Guard of South Carolina

See also 218 (number) 218, the year 73 (LXXIII) of the Julian calendar 218 BC