Charles John Klosterman (; born June 5, 1972) is an American author and essayist whose work focuses on American popular culture. He has been a columnist for Esquire and ESPN.com and wrote "The Ethicist" column for The New York Times Magazine. Klosterman is the author of twelve books, including two novels and the essay collection Sex, Drugs, and Cocoa Puffs: A Low Culture Manifesto. He was awarded the ASCAP Deems Taylor award for music criticism in 2002.