Joseph Satriani (born July 15, 1956) is an American guitarist, composer, songwriter, and guitar teacher. Early in his career, Satriani worked as a guitar instructor, with many of his former students achieving fame, including Steve Vai, Larry LaLonde, Rick Hunolt, Kirk Hammett, Andy Timmons, Charlie Hunter, Kevin Cadogan, and Alex Skolnick; he then went on to have a successful solo music career. He is a 15-time Grammy Award nominee and has sold over 10 million albums, making him the bestselling instrumental rock guitarist of all time.

In 1988, Satriani was recruited by Mick Jagger as lead guitarist for his first solo tour. Satriani briefly toured with Deep Purple, joining shortly after another departure of Ritchie Blackmore from the band in November 1993. He has worked with a range of guitarists during the G3 tour, which he founded in 1995. Satriani has been the guitarist for the supergroup Chickenfoot since joining the band in 2008.

Satriani was born in Westbury, New York of Italian descent. His paternal grandparents were from Piacenza and Bobbio, while his maternal grandparents were from Bari. He was raised Roman Catholic. He was inspired to play guitar at age 14, after hearing of the death of Jimi Hendrix. He has been said to have heard the news during football practice, where he then announced to his coach that he was quitting to become a guitarist.