Scott Gorham (born William Scott Gorham, March 17, 1951, Glendale, California) is an American guitarist and songwriter who rose to international recognition as one of the "twin lead guitarists" of the Irish-formed rock band, Thin Lizzy. Although not a founding member of Thin Lizzy, he is best known for his continuous membership after passing an audition and joining the band during a time when the band was on hiatus after the departure of guitarist Eric Bell. Gorham remained in the band after joining in 1974 through the band's breakup in 1984. He and guitarist Brian Robertson, both hired at the same time, marked the beginning of the band's most critically successful period, and together developed the "twin lead guitar" makeup of the band that distinguished its sound with dual backing vocals as well. Gorham was the band member with the longest membership after founders Brian Downey (drummer) and frontman and bass guitarist, Phil Lynott.
Since 1996 onward, with a different lineup, Gorham has continued to perform with Thin Lizzy on guitar and backing vocals, and, as in years past, he has contributed to the band with songwriting material written or co-written with other band members. In 2012, he co-founded the Thin Lizzy spin-off band, Black Star Riders.