List of Tennessee Union Civil War units

This is a list of regiments from the state of Tennessee that fought in the Union Army during the American Civil War (1861–1865). The list of Tennessee Confederate Civil War units is shown separately. Although Tennessee was officially a Confederate state in the conflict, the state would furnish the most units of soldiers for the Union Army than any other state within the Confederacy, totaling approximately 31,092 white troops and 20,133 black troops.^[1][2]