224th may refer to:
224th (Parachute) Field Ambulance, a Royal Army Medical Corps unit of the British airborne forces during the Second World War 224th Battalion, CEF, a unit in the Canadian Expeditionary Force during the First World War 224th Joint Communications Support Squadron (JCSS), provides deployable tactical communications for JTF and JSOTF Headquarters 224th Sustainment Brigade (United States), a sustainment brigade of the United States Army and the California Army National Guard
See also 224 (number) 224, the year 224 (CCXXIV) of the Julian calendar 224 BC