1st Virginia Infantry Battalion

1st Battalion, Virginia Volunteer Infantry
1st Battalion, Virginia Volunteer Infantry
	Flag of Virginia, 1861
Active	May 1861 – April 1865
Disbanded	April 1865
Country	Confederacy
Allegiance	Confederate States of America
Branch	Confederate States Army
Role	Infantry
Nickname(s)	Irish Battalion
Engagements	American Civil War Battle of Cheat Mountain; Jackson's Valley Campaign; Seven Days' Battles; Second Battle of Bull Run; Battle of Antietam; Battle of Fredericksburg;

The 1st Battalion, Virginia Infantry Regulars, also known as the Irish Battalion, was raised in Virginia for service in the Confederate States Army during the American Civil War and, served as infantry. It fought mostly with the Army of Northern Virginia.

The battalion was organized in May 1861, with men from the city of Richmond and Hanover County in five companies. It moved to western Virginia and participated in Lee's Cheat Mountain Campaign, then fought at First Kernstown, McDowell, and in Jackson's Valley Campaign. The unit was then assigned to General J.R. Jones' Brigade and was involved in many conflicts of the Army of Northern Virginia from the Seven Day's Battles to Fredericksburg. Later it was assigned to General Headquarters and in November 1864, Provost Guard.

It lost twenty-five percent of the 187 engaged at First Kernstown, had 3 wounded during the Seven Days' Battles and 3 killed and 19 wounded at Second Manassas. The unit surrendered 18 officers and 120 men.

Majors D.B. Bridgford, John D. Munford, and John Seddon were in command.