William Pitt (August 16, 1813 – February 21, 1873) was a prominent bandleader in the early history of the Latter Day Saint movement and the Church of Jesus Christ of Latter-day Saints (LDS Church). His band, known as the Nauvoo Brass Band, was the main band in Nauvoo, Illinois, and played an important role in the crossing of Iowa during the Mormon pioneer trek. During the Mormons' trek across Iowa in 1846, Pitt's band not only helped to keep people happy with its music but also raised money by holding ticketed events in communities through which they passed.