Thomas Maxwell is an American musician, best known as the rhythm guitarist of heavy metal supergroup Hellyeah and the lead guitarist of alternative metal band Knives Out!. Previous bands include Nothingface in which he was a founding member. After Nothingface, Maxwell was involved in a band with Skrape vocalist Billy Keeton. In the 1980s, he was in thrash metal band Have Mercy. His style of playing and writing relies more on grooves and hooks rather than shredding and fast soloing.

Hellyeah, stylized as HELLYEAH, was an American heavy metal supergroup formed in Dallas, Texas, in 2006. The band's last lineup consisted of lead vocalist Chad Gray, guitarists Christian Brady and Tom Maxwell, bassist Kyle Sanders, and drummer Roy Mayorga. The idea to form a supergroup originated in 2000 on the Tattoo the Earth tour, although plans were constantly put on hold due to scheduling conflicts. The summer of 2006 allowed the band to take the project seriously and record its first album. Recorded at Chasin' Jason studio in Dimebag Darrell's backyard, their self-titled album entered the Billboard 200 at number 9, selling 45,000 copies. They went on to release five more studio albums between 2010 and 2019. As of 2021, the band is on hiatus.