Nashville serves as the capital and most populous city in the U.S. state of Tennessee, situated within Davidson County in Middle Tennessee. It rests on the banks of the Cumberland River, a tributary of the Ohio River, which historically established its strategic importance as a port and later as a major railroad center. As the seat of Davidson County, it functions as the political heart of the state, hosting the Tennessee Supreme Court's courthouse for Middle Tennessee among other significant government institutions.

Founded in 1779 by settlers led by James Robertson and John Donelson, the city was originally named Fort Nashborough and later chartered by the North Carolina General Assembly in honor of Continental Army general Francis Nash. It became the permanent state capital in 1843, having previously served as county seat since its incorporation in 1806. During the Civil War, Nashville was the first Confederate state capital to fall to Union forces in 1862, remaining occupied until the war's end before gradually reclaiming its stature through trade and manufacturing.

The city is defined by its consolidated city-county government established in 1963, governed by a mayor and a metropolitan council. Its architectural landscape features grand classical-style buildings from the post-Civil War era, including a replica of the Parthenon in Centennial Park near downtown. The urban area includes six smaller municipalities within a two-tier system, reflecting its complex administrative history and growth from a small settlement into a major metropolitan hub.

Nashville is globally recognized as a center for the music industry, particularly country music, earning it the common nickname Music City. It is also sometimes referred to as the Athens of the South due to its numerous educational institutions, including Vanderbilt University and Fisk University. The city hosts three major professional sports teams and serves as the home of the Grand Ole Opry since 1925, drawing visitors with its vibrant bar scene, contemporary Christian music industry, and diverse cultural heritage.

At the 2020 census, Nashville had a population of 689,447, making it the fourth-most populous city in the Southeast and the 20th-most populous in the United States. The metropolitan area exceeds 2.15 million people, supported by a robust economy centered on healthcare, publishing, banking, and technology, with headquarters for companies like Hospital Corporation of America and Bridgestone Americas. The climate features cool winters and hot, humid summers, with the city situated in the fertile Nashville Basin surrounded by the Cumberland Highlands.