3rd Cavalry, 3rd Cavalry Division, 3rd Cavalry Brigade or 3rd Cavalry Regiment may refer to:

Corps

* III Cavalry Corps (Grande Armée) * III Cavalry Corps (German Empire)

Divisions

* 3rd Cavalry Division (German Empire) * 3rd Cavalry Division (Reichswehr) * 3rd Cavalry Division Amedeo Duca d'Aosta, of the Italian Army * 3rd Cavalry Division (United Kingdom) * 3rd Cavalry Division (United States)

Brigades

* 3rd Cavalry Brigade (Australia) * 3rd Cavalry Brigade (Germany) * 3rd (Ambala) Cavalry Brigade, of the Indian Army in the First World War * 3rd (Meerut) Cavalry Brigade, of the Indian Army in the Second World War * 3rd Cavalry Brigade (Imperial Japanese Army) * 3rd Cavalry Brigade (Poland) * 3rd Cavalry Brigade (United Kingdom) * 3rd Brigade Combat Team, 1st Cavalry Division (United States)

Regiments and battalions

* 3rd Cavalry Regiment (Australia) *

3rd Cavalry (India) The 3rd Cavalry Regiment is a cavalry regiment of the Indian Army formed from the 5th and 8th Cavalry regiments in 1922. It served on the North-West Frontier Province (1901–1955), North West Frontier and during World War I and World War II, i ...

* 3rd Bengal Cavalry, of the Indian Army * 3rd Bengal Light Cavalry, of the East India Company * 3rd Madras Cavalry, of the East India Company * 3d Armored Cavalry Squadron (South Vietnam) *

3rd Cavalry Regiment (United States) The 3rd Cavalry Regiment, formerly 3rd Armored Cavalry Regiment ("Brave Rifles") is a regiment of the United States Army currently stationed at Fort Cavazos, Texas. The regiment has a history in the United States Army that dates back to 19 M ...

* 3rd Arkansas Cavalry Regiment (Confederate), a Confederate regiment of the American Civil War * 3rd Arkansas Cavalry Regiment (Union), a Union regiment of the American Civil War * 3rd Colorado Cavalry Regiment, a Union regiment of the American Civil War * 3rd Regiment Indiana Cavalry, a Union regiment of the American Civil War * 3rd Regiment Illinois Volunteer Cavalry, a Union regiment of the American Civil War * 3rd Regiment Iowa Volunteer Cavalry, a Union regiment of the American Civil War * 3rd Kentucky Cavalry Regiment (Union), a Union regiment of the American Civil War * 3rd Michigan Volunteer Cavalry Regiment, a Union regiment of the American Civil War * 3rd Ohio Cavalry, a Union regiment of the American Civil War * 3rd Virginia Cavalry, a Confederate regiment of the American Civil War * 3rd West Virginia Volunteer Cavalry Regiment, a Union regiment of the American Civil War * 3rd Wisconsin Volunteer Cavalry Regiment, a Union regiment of the American Civil War {{mil-unit-dis