In military terms, 30th regiment may refer to:
Infantry regiments
edit- 30th (Cambridgeshire) Regiment of Foot, British Army
- 30th Light Dragoons, British Army
- 30th Infantry Regiment (United States)
Regiments in the American Civil War
editConfederate States Army
editUnion Army
edit- 30th Connecticut Infantry Regiment (Colored)
- 30th Indiana Infantry Regiment
- 30th Illinois Infantry Regiment
- 30th Iowa Volunteer Infantry Regiment
- 30th Regiment Kentucky Volunteer Mounted Infantry
- 30th Regiment Massachusetts Volunteer Infantry
- 30th Maine Volunteer Infantry Regiment
- 30th Michigan Volunteer Infantry Regiment
- 30th New York Volunteer Infantry Regiment
- 30th Wisconsin Volunteer Infantry Regiment