47th regiment may refer to:

47th (Lancashire) Regiment of Foot, a British Army infantry regiment 47th Regiment Royal Artillery, a British Army artillery regiment 47th (Oldham) Royal Tank Regiment, a British Army armoured regiment 47th Sikhs, a British Indian Army regiment 47th Palma Light Infantry Regiment, a Spanish Army infantry regiment 47th Infantry Regiment (United States), a US Army regiment 47th Infantry Regiment (Imperial Japanese Army), a Japanese regiment

American Civil War 47th Illinois Volunteer Infantry Regiment 47th Wisconsin Volunteer Infantry Regiment 47th Iowa Volunteer Infantry Regiment 47th Indiana Infantry Regiment 47th United States Colored Infantry Regiment 47th Missouri Volunteer Infantry 47th Regiment Kentucky Volunteer Mounted Infantry 47th Pennsylvania Infantry Regiment 47th New York Volunteer Infantry

47th Tennessee Infantry Regiment 47th Arkansas Infantry (Mounted) 47th Virginia Infantry 47th Georgia Volunteer Infantry