20th Cavalry may refer to:
Regiments and companies 20th Cavalry Regiment (United States) 20th Corps Cavalry Regiment 20th (Fife and Forfarshire Light Horse) Company, Imperial Yeomanry 20th Hussars
American Civil War regiments Union Army 20th Pennsylvania Cavalry Regiment
Confederate Army 20th Arkansas Cavalry, a name occasionally used for the 20th Arkansas Infantry Regiment 20th Texas Cavalry Regiment 20th Virginia Cavalry Regiment
Other uses Le Vingtième de cavalerie (The Twentieth Cavalry), the 27th comic album of the Belgian Lucky Luke series
See also 20th Regiment (disambiguation) 20th (disambiguation)