Thomas Wilberforce Egan (1836 – February 24, 1887) was a Union Army officer who led the Mozart Regiment during most of the American Civil War, later becoming a general.

[6] He became commander of a brigade during the Battle of Spotsylvania, after Brigadier General J. H. Hobart Ward was relieved for drunkenness on the night of May 12, 1864.

Egan was wounded during the Second Battle of Petersburg in June 1864, suffering slight paralysis as a result.

)[4][10] At the Battle of Boydton Plank Road on October 27, he commanded the second division II Corps in place of Brigadier General John Gibbon.

[9] On recovering, he was given a division in the Army of the Shenandoah on the request of Major General Winfield Scott Hancock.

On December 12, 1864, President Abraham Lincoln nominated Egan for appointment to the brevet grade of major general of volunteers to rank from October 27, 1864 for his service at the Battle of Boydton Plank Road, and the U.S. Senate confirmed the nomination on February 14, 1865.

[11] General Egan was mustered out of the service, January 15, 1866,[12] and subsequently lived in New York City.