19th Regiment or 19th Infantry Regiment may refer to:
Infantry regiments Green Howards (19th Regiment of Foot), a unit of the British Army Kumaon Regiment (19th Hyderabad Regiment), a unit of the British India and Indian Armies Norrbottens regemente (19th Regiment, Sweden), one of two Swedish regiments to bear this designation Västerbottens regemente (19th Regiment, Sweden), one of two Swedish regiments to bear this designation 19th Infantry Regiment (United States), a unit of the United States Army
Cavalry regiments 4th/19th Prince of Wales's Light Horse, a unit of the Australian Army 19th King George's Own Lancers, a unit of the British Indian Army 19th Alberta Dragoons, a unit of the Canadian Army 19th Light Dragoons, a unit of the British Army 19th Royal Hussars, a unit of the British Army 15th/19th The King's Royal Hussars, a unit of the British Army
Artillery regiments 19th Regiment Royal Artillery, a unit of the British Army
Aviation regiments Flying Regiment 19, Finnish Air Force, a unit of the Finnish Air Force
American Civil War regiments 19th Regiment Alabama Infantry, a unit of the Confederate (South) Army 19th Tennessee Infantry Regiment, a unit of the Confederate (South) Army 19th Illinois Volunteer Infantry Regiment, a unit of the Union (North) Army 19th Indiana Volunteer Infantry Regiment, a unit of the Union (North) Army 19th Iowa Volunteer Infantry Regiment, a unit of the Union (North) Army 19th Maine Volunteer Infantry Regiment, a unit of the Union (North) Army 19th Michigan Volunteer Infantry Regiment, a unit of the Union (North) Army 19th Wisconsin Volunteer Infantry Regiment, a unit of the Union (North) Army 19th United States Colored Infantry Regiment, a unit of the Union (North) Army
See also 19th Corps (disambiguation) 19th Division (disambiguation) 19th Brigade (disambiguation) 19th Group (disambiguation) 19th Battalion (disambiguation) 19th Squadron (disambiguation)