13th Regiment or 13th Infantry Regiment may refer to:
13th Aviation Regiment, a unit of the United States Army 13th Parachute Dragoon Regiment, a unit of the French Special Forces Somerset Light Infantry (13th Regiment of Foot), a unit of the British Army 13th Infantry Regiment (Greece) 13th Infantry Regiment (Philippine Army), a unit of the Philippine Army 13th Cavalry Regiment (United States), a unit of the United States Army 13th Infantry Regiment (United States), a unit of the United States Army 13th Infantry Regiment (Imperial Japanese Army), a unit of the Imperial Japanese Army
American Revolutionary War regiments 13th Continental Regiment 13th Massachusetts Regiment 13th Pennsylvania Regiment 13th Virginia Regiment
American Civil War regiments
Union (Northern) Army
13th Illinois Volunteer Infantry Regiment 13th Iowa Volunteer Infantry Regiment 13th Maine Volunteer Infantry Regiment 13th Regiment Massachusetts Volunteer Infantry 13th Michigan Volunteer Infantry Regiment 13th Regiment Illinois Volunteer Cavalry 13th West Virginia Volunteer Infantry Regiment 13th Wisconsin Volunteer Infantry Regiment
See also
13th Army (Soviet Union) 13th Division (disambiguation) 13th Brigade (disambiguation) 13th Group (disambiguation) 13th Battalion (disambiguation) 13 Squadron (disambiguation)