Gary Wayne Holt is an American musician from the San Francisco Bay Area. He is the guitarist, bandleader, and main songwriter for thrash metal band Exodus, and has also been a member of Slayer from 2011 to 2019 and again since 2024, initially joining as a temporary guitarist in place of Jeff Hanneman, and as a permanent guitarist after Hanneman's death in May 2013.

Exodus is an American thrash metal band formed in 1979 in Richmond, California. Their current lineup consists of guitarists Gary Holt and Lee Altus, bassist Jack Gibson, drummer Tom Hunting, and lead vocalist Steve "Zetro" Souza. There are no original members left in Exodus other than Hunting, who has departed from the band twice, in 1989 and 2004, but rejoined in 2007. Exodus is also notable for including a then-unknown Kirk Hammett, who was the band's lead guitarist from its inception to his departure in 1983, when he left to join fellow Bay Area thrash metal band Metallica as Dave Mustaine's replacement. Holt has been most consistent member throughout various lineup changes and breakups, and is the only member to appear on all of Exodus' recordings. Much of the band's career has also been affected by feuds between both band members and record companies, two extended hiatuses, deaths of former band members and drug addictions.