Alvin Gilbert Cohn (November 24, 1925 – February 15, 1988) was an American jazz saxophonist, arranger and composer. He came to prominence in the band of clarinetist Woody Herman and was known for his longtime musical partnership with fellow saxophonist Zoot Sims.

Cohn was born in Brooklyn, New York.

In addition to his work as a jazz tenor saxophonist, Cohn was widely respected as an arranger. His work included the Broadway productions of Raisin' and Sophisticated Ladies, and his arrangements of his own compositions were recorded by big bands led by Maynard Ferguson, Gerry Mulligan, Terry Gibbs and Bob Brookmeyer. Cohn also arranged for unreleased Linda Ronstadt recordings from the 1980s.

In June, 1972, Cohn appeared on stage with Elvis Presley, as a member of the Joe Malin Orchestra at Madison Square Garden.

Cohn died of liver cancer in Stroudsburg, Pennsylvania in 1988.

Cohn's first wife was singer Marilyn Moore. His son, Joe Cohn, is a jazz guitarist. Granddaughter Shaye Cohn, Joe's daughter, is a musician who plays cornet with her band Tuba Skinny.

With Manny Albam

With Mose Allison