Dave Mustaine is an American guitarist, singer, composer, and songwriter working primarily in the thrash metal, heavy metal, and speed metal genres.

Born on September 13, 1961, in La Mesa, California, Mustaine grew up as a United States citizen and received his education at Marina High School. These early years preceded a career in music that would place him at the center of the American heavy metal scene.

Mustaine performs and records in the English language, and his work spans the overlapping genres of thrash metal, speed metal, and heavy metal music. His contributions as both an instrumentalist and a vocalist reflect the dual demands of fronting a band in these technically rigorous styles, where guitar performance and vocal delivery are equally central to the music's character.

He serves as the primary songwriter of Megadeth, a thrash metal band with which his roles as guitarist, singer, composer, and songwriter have been consistently associated. His work with Megadeth places him within the thrash metal genre that emerged as one of the more aggressive and technically demanding strains of heavy metal, and his function as the band's principal creative force has defined the direction of that group's recorded output.