1st Cavalry

1st Cavalry, 1st Cavalry Division, 1st Cavalry Brigade, 1st Cavalry Regiment or 1st Cavalry Battalion may refer to:

Armies

 * 1st Cavalry Army, Soviet Union

Corps

 * I Cavalry Corps (Grande Armée)
 * I Cavalry Corps (German Empire)
 * 1st Cavalry Corps (Russian Empire)

Divisions

 * 1st Cavalry Division (Australia)
 * 1st Cavalry Division (Belgium)
 * 1st Light Cavalry Division (France)
 * 1st Foot Cavalry Division (France)
 * 1st Cavalry Division (German Empire)
 * 1st Cavalry Division (Reichswehr), Germany
 * 1st Cavalry Division (Wehrmacht), Germany
 * 1st Cossack Cavalry Division, a unit of the Wehrmacht, Germany
 * 1st Indian Cavalry Division
 * 1st Cavalry Division Eugenio di Savoia, a unit of the Royal Italian Army
 * 1st Cavalry Division (Poland)
 * 1st Cavalry Division (Russian Empire)
 * 1st Guards Cavalry Division (Russian Empire)
 * 1st Cavalry Division (Soviet Union)
 * 1st Mountain Cavalry Division (Soviet Union)
 * 1st Cavalry Division (United Kingdom)
 * 1st Cavalry Division (United States)
 * 1st Cavalry Division (Kingdom of Yugoslavia)

Brigades

 * 1st Cavalry Brigade (Australia)
 * 1st Mechanized Cavalry Brigade, Brazil
 * 1st Cavalry Brigade (France)
 * 1st Cavalry Brigade (Wehrmacht), Germany
 * 1st Cavalry Brigade (Hungary)
 * 1st (Risalpur) Cavalry Brigade, a unit of the Indian Army
 * 1st Cavalry Brigade (Imperial Japanese Army)
 * 1st Cavalry Brigade (Poland)
 * 1st Cavalry Brigade (United Kingdom)
 * 1st Cavalry Brigade (United States)
 * 1st Air Cavalry Brigade, 1st Cavalry Division (United States)

France

 * 1st Foreign Cavalry Regiment, a unit of the French Foreign Legion
 * 1st Polish Light Cavalry Regiment of the Imperial Guard, a unit of Napoleonic France
 * 1st Spahi Regiment
 * 1st Parachute Hussar Regiment

Germany

 * 1st Royal Bavarian Heavy Cavalry (Prince Charles of Bavaria's)
 * 1st Royal Bavarian Chevau-légers "Emperor Nicholas of Russia"
 * 1st Royal Bavarian Uhlans "Emperor William II, King of Prussia"
 * 1st Royal Saxon Guards Heavy Cavalry
 * 1st King's Mounted Rifles
 * 1st (Silesian) Life Cuirassiers "Great Elector"
 * 1st Guards Uhlans

United States

 * 1st Cavalry Regiment (United States)
 * 1st Cavalry Regiment (1855)
 * 1st United States Volunteer Cavalry

Union Army (American Civil War)

 * 1st Regiment Alabama Cavalry (Union)
 * 1st Regiment Arkansas Cavalry (Union)
 * 1st California Cavalry Regiment
 * 1st California Cavalry Battalion
 * 1st Colorado Cavalry Regiment
 * 1st Connecticut Cavalry Regiment
 * 1st Dakota Cavalry Battalion
 * 1st Florida Cavalry Regiment (Union)
 * 1st Illinois Cavalry Regiment
 * 1st Iowa Volunteer Cavalry Regiment
 * 1st Louisiana Cavalry Regiment (Union)
 * 1st Maine Volunteer Cavalry Regiment
 * 1st Regiment Maryland Volunteer Cavalry
 * 1st Maryland Cavalry (Union)
 * 1st Michigan Volunteer Cavalry Regiment
 * 1st Minnesota Volunteer Cavalry Regiment
 * 1st Regiment Nebraska Volunteer Cavalry
 * 1st New Jersey Volunteer Cavalry
 * 1st Ohio Cavalry
 * 1st Oregon Volunteer Cavalry Regiment
 * 1st Pennsylvania Cavalry Regiment
 * 1st Rhode Island Cavalry
 * 1st Texas Cavalry Regiment (Union)
 * 1st Vermont Cavalry
 * 1st West Virginia Volunteer Cavalry Regiment
 * 1st Wisconsin Volunteer Cavalry Regiment

Confederate Army (American Civil War)

 * 1st Regiment Alabama Volunteer Cavalry (Confederate)
 * 1st Arkansas Cavalry Regiment (Crawford's)
 * 1st Arkansas Cavalry Regiment (Dobbin's)
 * 1st Cavalry Regiment, Arkansas State Troops
 * 1st Florida Cavalry
 * 1st Florida Special Cavalry Battalion
 * 1st Georgia Cavalry
 * 1st Battalion, Georgia Cavalry
 * 1st Louisiana Cavalry Regiment
 * 1st North Carolina Cavalry Regiment
 * 6th Arkansas Cavalry Regiment, also known as the 1st Trans-Mississippi Cavalry Regiment
 * 1st Virginia Cavalry

Others

 * 1st Cavalry Regiment (Chile)