John Laird Abercrombie (December 16, 1944 – August 22, 2017) was an American jazz guitarist. His work explored jazz fusion, free jazz, and avant-garde jazz. Abercrombie studied at Berklee College of Music in Boston, Massachusetts. He was known for his understated style and his work with organ trios.

John Abercrombie was born on December 16, 1944, in Port Chester, New York. Growing up in the 1950s in Greenwich, Connecticut he was attracted to the rock and roll of Chuck Berry, Elvis Presley, Fats Domino, and Bill Haley and the Comets. He also liked the sound of jazz guitarist Mickey Baker of the vocal duo Mickey and Silvia. He had two friends who were musicians with a large jazz collection. They played him albums by Dave Brubeck and Miles Davis. The first jazz guitar album he heard was by Barney Kessel.

He took guitar lessons at the age of ten, asking his teacher to show him what Barney Kessel was playing. After high school, he attended Berklee College of Music. At Berklee, he was drawn to the music of Jim Hall, the 1962 album The Bridge by Sonny Rollins, and Wes Montgomery on his albums The Wes Montgomery Trio (1959) and Boss Guitar (1963). He cites George Benson and Pat Martino as inspirations. He often played with other students at Paul’s Mall, a jazz club in Boston connected to a larger club, Jazz Workshop. Appearing at Paul’s Mall led to meetings with Michael Brecker, Randy Brecker, and organist Johnny Hammond Smith, who invited him to go on tour.