Mark Thomas Tremonti (born April 18, 1974) is an American musician and singer-songwriter, best known as the guitarist of the post-grunge band Creed and lead guitarist of the alternative metal band Alter Bridge. He is a founding member of both bands, and has also collaborated with many other artists over the years. He formed his own band, Tremonti, in 2012, releasing the album All I Was. The band's sophomore album, Cauterize, was released in June 2015.
Since his early years with Creed, Tremonti has received positive recognition as a guitarist and songwriter and has received a number of accolades, including one Grammy Award for Creed's single "With Arms Wide Open." He was also named "Guitarist of the Year" for three consecutive years by Guitar World, and in 2011 he was listed in Total Guitar magazine as the fourth greatest heavy metal guitarist of all time.