229th

229th may refer to:


 * 1st Battalion, 229th Aviation Regiment, an Attack Helicopter Battalion operating AH-64 Apaches attack and OH-58 Kiowa scout helicopters
 * 229th (South Saskatchewan) Battalion, CEF, a unit in the Canadian Expeditionary Force during the First World War
 * 2nd Battalion, 229th Aviation Regiment, the only United States Army Attack Helicopter unit in history to have captured enemy troops