101st Regiment may refer to:
Infantry regiments
edit- 101st Regiment of Foot (disambiguation), several units of the British Army
- 101st Grenadiers, a unit of the army of British India
- 101st (Northumbrian) Regiment Royal Artillery, a unit of the British Army
- 101st Infantry Regiment (United States)
- 101st Regiment "Edmonton Fusiliers", a unit of Canada's Non-Permanent Active Militia from 1908 to 1920
Armoured regiments
edit- 101 Panzer Regiment, a unit of the Führer Grenadier Brigade of the German Army
Aviation regiments
edit- 101st Fighter-Training Aviation Regiment, a unit of the Yugoslav Air Force
Cavalry regiments
edit- 101st Cavalry Regiment, a unit of the New York Army National Guard, United States Army
Artillery regiments
edit- 101st Field Artillery Regiment, a unit of the United States Army
American Civil War regiments
edit- 101st Indiana Infantry Regiment, a unit of the Union (North) Army
- 101st Illinois Volunteer Infantry Regiment, a unit of the Union (North) Army