Frederick Jay Rubin (born March 10, 1963) is an American record producer and former co-president of Columbia Records. Along with Russell Simmons, he is the co-founder of Def Jam Recordings and also established American Recordings. With the Beastie Boys, LL Cool J, Public Enemy, Geto Boys, and Run–D.M.C., Rubin helped popularize hip hop music.

Rubin has also worked with artists such as AC/DC, Adele, Aerosmith, Luna Halo, At The Drive-In, Audioslave, Black Sabbath, Coheed And Cambria, Damien Rice, Danzig, Dixie Chicks, Ed Sheeran, Eminem, Frank Ocean, Playboi Carti, Gogol Bordello, Jakob Dylan, Jay Z, Jake Bugg, James Blake, Joe Strummer, Johnny Cash, Jovanotti, Justin Timberlake, Kanye West, Lady Gaga, Lana Del Rey, Led Zeppelin, Linkin Park, Melanie C, Metallica, Mick Jagger, Neil Diamond, Rage Against the Machine, Red Hot Chili Peppers, Shakira, Sheryl Crow, Slayer, Slipknot, Suitors of Penelope, System of a Down, The Avett Brothers, The Black Crowes, The Cult, The Four Horsemen, The Mars Volta, The Smashing Pumpkins, Tom Petty and the Heartbreakers, Type O Negative, Weezer, Dan Auerbach, The Black Keys and ZZ Top.

In 2007, MTV called him “the most important producer of the last 20 years”, and the same year Rubin appeared on Time’s 100 Most Influential People in the World.