Ben Affleck, coming off winning Golden Globe Awards for best motion picture drama and director for the real-life drama, received the award handed out at the Beverly Hilton Hotel.
"I'd be remiss if I didn't mention that I'm still working as an actor," he said in his acceptance speech.
Affleck also stars in "Argo" as the CIA operative who orchestrated a daring rescue of six American embassy employees during the 1979 Iranian hostage crisis. George Clooney and Grant Heslov share the producer award with Affleck as "Argo" beat out the Civil War saga "Lincoln," which has a leading 12 Academy Awards nominations.
Other nominees in the PGA movie category were "Les Miserables," "Zero Dark Thirty," "Beasts of the Southern Wild," "Django Unchained," "Life of Pi," "Moonrise Kingdom," "Silver Linings Playbook," and Skyfall."
Along with honors from other Hollywood professional groups such as actors, directors and writers guilds, the producer prizes have become part of the preseason sorting out contenders for Academy Awards.
The big winner often goes on to claim the best-picture honor at the Oscars on Feb. 24.
Disney's "Wreck-It Ralph" won the guild's animation category, beating "Brave," "Frankenweenie," "ParaNorman" and "Rise of the Guardians."
"Searching for Sugar Man" took the documentary prize, beating "A People Uncounted," "The Gatekeepers," "The Island President," and "The Other Dream Team."
Showtime's "Homeland" won the producer's award for television drama series, which beat out "Breaking Bad," "Downton Abbey," "Game of Thrones," and "Mad Men."
The ABC sitcom "Modern Family" took the prize for best comedy series for the third straight year, beating "30 Rock," "The Big Bang Theory," "Curb Your Enthusiasm," and "Louie."