2nd Regiment

2nd Regiment may refer to:

British Army

 * 2nd Royal Tank Regiment

United States Army

 * 2nd Cavalry Regiment (United States)
 * 2nd Marine Regiment (United States)
 * 2nd Infantry Regiment (United States)
 * 2nd Field Artillery Regiment (United States)

Australian Army

 * 2nd Cavalry Regiment (Australia) - armoured reconnaissance unit
 * 2nd/14th Light Horse Regiment - armoured reconnaissance unit
 * 2nd/10th Medium Regiment, Royal Australian Artillery

French Army

 * 2nd Foreign Engineer Regiment - French Foreign Legion Combat engineering unit
 * 2nd Foreign Parachute Regiment - French Foreign Legion airborne commando unit
 * 2nd Marine Infantry Parachute Regiment - airborne unit
 * 2nd Foreign Infantry Regiment - French Foreign Legion unit

Belgian Army

 * 2nd/4th Regiment Mounted Rifles - armoured reconnaissance unit
 * 2nd/4th Lancers Regiment - tank unit
 * 2nd Field Artillery Regiment/Field Artillery Battery ParaCommando

Italian Army

 * 2nd Alpini Regiment
 * 2nd Alpine Signal Regiment
 * 2nd Alpine Engineer Regiment
 * 2nd Alpine Artillery Regiment

Philippine Commonwealth Army

 * 2nd Infantry Regiment (Philippine Commonwealth Army)

Philippine Constabulary

 * 2nd Infantry Regiment (Philippine Constabulary) - The 2nd Infantry Regiment, Philippine Constabulary was the military establishment and active on 1935 to 1944 and 1944 to 1946 as the U.S. military command and stationed in North-Central Luzon, Philippines.

Canadian Army

 * 2nd Field Regiment, Royal Canadian Artillery

Portuguese Army

 * 2nd Lancers Regiment - Portuguese army military police unit

Former units

 * 2nd Armoured Regiment (Poland) - Polish army World War II unit
 * 2nd Punjab Regiment - British Indian army unit
 * 2nd East Anglian Regiment - Short lived British army unit
 * 64th (2nd Staffordshire) Regiment of Foot - British army
 * 2nd Tangier Regiment - British Army
 * Polish 2nd Legions' Infantry Regiment
 * 65th (2nd Yorkshire, North Riding) Regiment of Foot - British army
 * 2nd Queen Victoria's Own Rajput Light Infantry - British Indian army
 * 2nd Infantry Regiment (South Korea) - Korean War unit
 * 2nd Guards Field Artillery - Imperial German Army World War I unit
 * 2/6th Cavalry Commando Regiment (Australia) - World War II unit
 * 2nd Yugoslav Assault Regiment - Yugoslav Air Force World War II unit
 * 2nd Training Aviation Regiment - Yugoslav Air Force post-World War II unit

Union Army

 * 2nd Iowa Regiment
 * 2nd Regiment Indiana Cavalry
 * 2nd Maryland Infantry
 * 2nd Wisconsin Volunteer Infantry Regiment
 * 2nd Regiment of Cavalry, Massachusetts Volunteers
 * 2nd New Hampshire Volunteer Regiment
 * 2nd Maine Volunteer Infantry Regiment
 * 2nd United States Volunteer Sharpshooter Regiment
 * 2nd Regiment Illinois Volunteer Cavalry
 * 2nd Michigan Volunteer Infantry Regiment
 * 2nd New York Volunteer Infantry Regiment
 * 2nd Michigan Volunteer Cavalry Regiment
 * 2nd Regiment Wisconsin Volunteer Cavalry
 * 2nd West Virginia Volunteer Infantry Regiment
 * 2nd West Virginia Veteran Volunteer Infantry Regiment
 * 2nd Regiment Iowa Volunteer Cavalry
 * 2nd Minnesota Volunteer Cavalry Regiment
 * 2nd West Virginia Volunteer Cavalry Regiment
 * 2nd Alabama Volunteer Infantry Regiment (African Descent)
 * 2nd Nebraska Cavalry
 * 2nd Regiment Massachusetts Volunteer Heavy Artillery
 * 2nd Regiment South Carolina Volunteer Infantry (African Descent)
 * 2nd United States Infantry Regiment (Civil War)
 * 2nd Regiment Kansas Volunteer Infantry (African Descent)
 * 2nd Ohio Infantry
 * 2nd Regiment Massachusetts Volunteer Infantry

Confederate Army

 * 2nd Kentucky Infantry
 * 2nd Regiment Alabama Volunteer Cavalry (Confederate)

American Revolutionary War units

 * 2nd Canadian Regiment
 * 2nd Virginia Regiment
 * 2nd New Hampshire Regiment
 * 2nd Connecticut Regiment
 * 2nd Massachusetts Regiment
 * 2nd New Jersey Regiment
 * 2nd New York Regiment
 * 2nd Maryland Regiment
 * 2nd Pennsylvania Regiment
 * 2nd Rhode Island Regiment
 * 2nd Georgia Regiment
 * 2nd South Carolina Regiment
 * 2nd North Carolina Regiment
 * 2nd Albany County Militia Regiment

Others

 * Nevers' 2nd Regiment Band