Douglas Joseph Sides (born October 10, 1942, Los Angeles) is an American jazz drummer.
Sides attended USC, NYU, and Berklee College of Music, and worked in the early 1960s with Illinois Jacquet, Teddy Edwards, Lionel Hampton, Johnny Griffin, Howard Rumsey, Curtis Amy, Harold Land, Sonny Stitt, Charles Kynard, and Buddy Collette. He served in the US Armed Forces from 1964 to 1966, then worked with Merle Saunders and John Handy in San Francisco. In 1968 he moved back to Los Angeles, and worked with Bobby Hutcherson, Phineas Newborn, O.C. Smith, and Blue Mitchell. In the 1970s he worked with Kai Winding and Abdullah Ibrahim; in the 1980s he was a touring drummer for Abbey Lincoln and John Hendricks.
In 1988, Sides toured Europe and played in the Netherlands with Joe van Enkhuisen; the following year he moved there. He subsequently played in Europe with Benny Bailey, Tete Montoliu, Steve Grossman, Tom Harrell, Walter Bishop, Jr., Ralph Sutton, Ranee Lee, Hank Jones, Oliver Jones, Don Bennett, Fritz Kisse, and Ricky Ford.