Marc Spitz (October 2, 1969 – February 4, 2017) was an American music journalist, writer and playwright.

Born in Far Rockaway, Queens, Spitz was the author of the novels How Soon Is Never and Too Much, Too Late, and the biographies We Got the Neutron Bomb: The Untold Story of LA Punk (with Brendan Mullen), Nobody Likes You: Inside the Turbulent Life, Times and Music of Green Day, Bowie: A Biography, and Jagger: Rebel, Rock Star, Rambler, Rogue.

He appears in the anthologies The Encyclopedia of Ex-es, Howl: A Collection of the Best Contemporary Dog Wit, and Rock N’ Roll Cage Match: Music’s Greatest Rivalries Decided.

Spitz was a "Downtown" playwright, emerging from the Ludlow Street scene around Todo Con Nada in 1998.

His other theatrical work includes Retail Sluts, The Rise and Fall of the Farewell Drugs, ...Worry, Baby, The Hobo Got Too High, I Wanna Be Adored, Shyness Is Nice, Gravity Always Wins, The Name of This Play is Talking Heads, Your Face Is A Mess, A Marshmallow World, Up For Anything, and P.S.