Walon Green (born December 15, 1936) is an American documentary film director and screenwriter for both TV and films. He was recently the showrunner/executive producer of the ninth season of the USA Network television series, Law & Order: Criminal Intent.
Born in Baltimore, Maryland, he produced and directed documentaries for National Geographic and David Wolper, including The Hellstrom Chronicle, for which he was accorded the Academy Award and the BAFTA in 1972, and The Secret Life of Plants in 1979. Among his screenwriting credits are the films The Wild Bunch, Sorcerer, The Brink's Job, Eraser, The Hi-Lo Country and RoboCop 2. On television, he wrote and produced episodes of Hill Street Blues, Law & Order, ER and NYPD Blue for which he received a 1995 Edgar Award. More recently, he was a Creative Consultant for the Chris Carter science fiction TV series Millennium. He is also notable for allowing a centipede to crawl over his face in the tunnel scene of Willy Wonka & the Chocolate Factory.
Green is the father of Darwin Green, a writer and film editor, and Collin Green, a teacher and photographer.
In fall 2008, he assumed the post of executive producer for the Vincent D'Onofrio-Kathryn Erbe episodes of Law & Order: Criminal Intent, he took over as show runner/executive producer for all episodes in the series' ninth season.