Paul Brandon Gilbert is an American hard rock and heavy metal guitarist. He is the co-founder of the band Mr. Big, and was also a member of Racer X, with whom he released several albums. In 1996, Gilbert launched a solo career, for which he has released numerous solo albums, and featured in numerous collaborations and guest appearances on other musicians' albums.

Mr. Big is an American rock band formed in Los Angeles in 1988. The band was originally composed of Eric Martin, Paul Gilbert (guitar), Billy Sheehan (bass), and Pat Torpey (drums). Though primarily a hard rock band, they are also known for softer songs. Their songs are often marked by strong vocals and vocal harmonies. Their hits include "To Be with You" and "Just Take My Heart". The band takes its name from a song by Free which it covered on the 1993 album Bump Ahead.