20th Regiment may refer to:

Infantry regiments

20th Infantry Regiment (United States) The 20th Infantry Regiment ("Sykes' Regulars") is a United States Army infantry regiment. Currently only the 5th Battalion of the 20th Infantry still exists. Stationed at Joint Base Lewis-McChord and part of the 1st Stryker Brigade Combat Te ...

* 20th Regiment of Bengal Native Infantry, an East India Company unit * 20th Duke of Cambridge's Own Infantry (Brownlow's Punjabis), a British Indian Army unit *

20th Continental Regiment The 20th Continental Regiment was a unit of the Connecticut Line in the 1776 establishment of the Continental Army. It was often referred to in records as Durkee's Regiment, after Colonel John Durkee, its commanding officer for most of its exis ...

, a Continental Army unit * 20th Regiment of Foot, a British Army unit

American Civil War regiments

Union (Northern) regiment

* 20th Connecticut Infantry Regiment * 20th Illinois Infantry Regiment *

20th Indiana Infantry Regiment The 20th Indiana Volunteer Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War. The Regiment was officially raised on July 22, 1861, by William L. Brown, the first Colonel of the Regiment, in res ...

20th Iowa Infantry Regiment The 20th Iowa Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War. Service The 20th Iowa Infantry was organized at Clinton, Iowa and mustered in for three years of Federal service on August 25, ...

* 20th Kansas Militia Infantry Regiment * 20th Kentucky Infantry Regiment *

20th Maine Infantry Regiment The 20th Maine Infantry Regiment was a volunteer regiment of the United States Army ( Union Army) during the American Civil War (1861–1865), most famous for its defense of Little Round Top at the Battle of Gettysburg in Gettysburg, Pennsylvan ...

* 20th Massachusetts Infantry Regiment * 20th Michigan Infantry Regiment * 20th New York Infantry Regiment * 20th Pennsylvania Infantry Regiment *

20th Wisconsin Infantry Regiment The 20th Wisconsin Infantry Regiment was a volunteer infantry regiment that served in the Union Army during the American Civil War. Service The 20th Wisconsin was organized at Madison, Wisconsin, and mustered into Federal service August 23, 18 ...

Confederate (Southern) regiments

20th Arkansas Infantry Regiment The 20th Arkansas Infantry (1861–1865) was a Confederate Army infantry regiment during the American Civil War. The unit was also known as the 22nd Arkansas Infantry. When the unit was reorganized following its capture at the Siege of Vicksburg, ...

20th Tennessee Infantry Regiment The 20th Regiment, Tennessee Infantry was an infantry regiment from Tennessee that served in the Confederate States Army during the American Civil War. Notable battles that the regiment was engaged in include the Battle of Mill Springs and the Bat ...

* 20th Virginia Infantry Regiment

Other regiments

* 20th Marine Regiment (United States) * 20th Field Artillery Regiment, RCA, Royal Canadian Artillery * 20th Field Artillery Regiment (United States) *

20th Hussars The 20th Hussars was a cavalry regiment of the British Army. After service in the First World War it was amalgamated with the 14th King's Hussars to form the 14th/20th King's Hussars in 1922. History Early wars The regiment was originally ra ...

, a cavalry regiment of the British Army *

20th Lancers (Pakistan) The 20th Lancers is an armoured regiment in the Armoured Corps of the Pakistan Army. It is considered to be the successor of the old 20th Lancers of the British Indian Army. As part of a reorganization of the British Indian Army, the original 20 ...

, an armoured regiment *

20th Light Dragoons The 20th Regiment of Light Dragoons was a cavalry regiment of the British Army. History The regiment was raised as the 20th (Jamaica) Regiment of (Light) Dragoons in 1792; it was deployed to Jamaica in 1795 during the Second Maroon War. The reg ...

, a cavalry regiment of the British Army * 20th Surveillance and Target Acquisition Regiment, Royal Australian Artillery {{mil-unit-dis