19th Cavalry may refer to:
Regiments and battalions 19th Alberta Dragoons 19th Cavalry Regiment (United States) 19th Corps Cavalry Regiment 19th Royal Hussars 19th (Lothians and Berwickshire) Company, Imperial Yeomanry
American Civil War units Union Army 19th New York Cavalry Regiment 19th Pennsylvania Cavalry Regiment
Confederate Army 19th Mississippi Cavalry Battalion 19th Texas Cavalry Regiment 19th Virginia Cavalry Regiment
See also 19th Regiment (disambiguation) 19th (disambiguation)