Virginia (), officially the Commonwealth of Virginia, is a state in the Southeastern and Mid-Atlantic regions of the United States between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth are shaped by the Blue Ridge Mountains and the Chesapeake Bay, which provide habitat for much of its flora and fauna. The capital of the Commonwealth is Richmond; Virginia Beach is the most-populous city, and Fairfax County is the most-populous political subdivision. The Commonwealth’s estimated population as of 2019 is over 8.54 million, with 36% of them living in the Baltimore–Washington metropolitan area.

The area’s history begins with several indigenous groups, including the Powhatan. In 1607 the London Company established the Colony of Virginia as the first permanent English colony in the New World. Virginia’s state nickname, the Old Dominion, is a reference to this status. Slave labor and the land acquired from displaced Native American tribes each played a significant role in the colony’s early politics and plantation economy. Virginia was one of the 13 Colonies in the American Revolution. In the American Civil War, Virginia’s Secession Convention resolved to join the Confederacy while the First Wheeling Convention resolved to remain in the Union, leading to a split that created West Virginia. Although the Commonwealth was under one-party rule for nearly a century following Reconstruction, both major national parties are competitive in modern Virginia.

Virginia’s state legislature is the Virginia General Assembly, which was established in 1619 and is the oldest continuous law-making body in North America. It is made up of a 40-member Senate and a 100-member House of Delegates. The state government is unique in how it treats cities and counties equally, manages local roads, and prohibits governors from serving consecutive terms. Virginia’s economy has many sectors: agriculture in the Shenandoah Valley; federal agencies in Northern Virginia, including the headquarters of the U.S. Department of Defense and Central Intelligence Agency; and military facilities in Hampton Roads, the site of the region’s main seaport.