One O'Clock Lab Band is an ensemble of the Jazz Studies division at the University of North Texas College of Music in Denton, Texas. Since the 1970s, the band's albums have received seven Grammy Award nominations, including two for Lab 2009. Steve Wiest directed the band from 2008 to 2014. Jay Saunders became interim director in 2014.
The One O'Clock Lab Band is the highest of seven lab bands at the college. Each band is named for its hour of rehearsal and each contains 20-pieces: five trumpets, five trombones, five saxophones, piano, guitar, double bass, drums, and voice. The One O'Clock band evolved from an extracurricular stage band founded in 1927 into a curricular laboratory dance band in 1947 when North Texas began its jazz degree program.