The Lt. Dan Band is an American cover band originally formed in Chicago in 2003 by Gary Sinise and Kimo Williams to perform at USO shows, entertain troops, and raise money for disabled veterans. The band is named after the character Lieutenant Dan Taylor, whom Sinise portrayed in the film Forrest Gump. Sinise has said in interviews that many people recognize him as "Lieutenant Dan" rather than by his real name, hence the band's name. The concept came about when Sinise asked for permission to bring musicians on his USO tours. The group was initially known as "Gary Sinise and the Lt. Dan Band". By September 2025 the group had played 600 shows, counting from their first performance at Great Lakes Naval Base in November 2003.