Lyle Preslar is an American musician best known for being the guitar player and songwriter for the hardcore punk band Minor Threat. Before that, he was the vocalist for The Extorts, whom later became State of Alert after he quit. Despite not performing on any recordings of State of Alert, Preslar received co-writing credit for the songs "Draw Blank" from the No Policy EP and "I Hate the Kids" from the Dischord Records compilation Flex Your Head.
After Minor Threat dissolved, he played guitar in The Meatmen and the first incarnation of Samhain.
After retiring from performing, he ran Caroline Records, signing Ben Folds, Chemical Brothers, and Fat Boy Slim; he was later a marketing executive for Elektra Records and Sire Records. In 2007, he graduated from Rutgers School of Law–Newark. He is admitted to practice law in the state of New York.
He is married to Sandy Alouete, an executive at VH1 and they have a child named Romy.
Preslar also won the Grammy Law Initiative Writing Prize in 2007 with an article about the RIAA vs. XM Satellite Radio.