Vienna is a town in Fairfax County, Virginia, United States. As of the 2010 United States Census, it had a population of 15,687.
Non-native settlement in the region dates to ca. 1740. In 1754, prominent soldier and land owner Colonel Charles Broadwater settled within the town boundaries. Broadwater's son-in-law, John Hunter built the first recorded house there in 1767, naming it Ayr Hill (recalling his birthplace, Ayr, Scotland.) That name was subsequently applied to the tiny, developing community. The name of the town was changed in the 1850s, when a doctor named William Hendrick settled there on the condition that the town would rename itself after his hometown, Phelps, New York, then known as Vienna. On June 17, 1861 a relatively minor but widely noted military engagement occurred there, the Battle of Vienna, one of the earliest armed clashes of the Civil War. A would-be Union occupation unit under Brig. Gen. Robert C. Schenck approached Vienna from the east by train but was ambushed and forced to retreat by a superior Confederate force led by Colonel Maxcy Gregg.