Both movies earned four nominations each, but while /*Colin Firth*/ was nominated in the best actor category for his role in "The King's Speech," /*Mark Wahlberg*/ was not nominated for "The Fighter."
Wahlberg's co-stars Christian Bale, Amy Adams and Melissa Leo were all nominated for awards.
Along with "The King's Speech" and "The Fighter," "Black Swan," "The Kids Are All Right" and "The Social Network" are competing for SAG's overall cast performance award.
Among television contenders, "Modern Family" led with four comedy nominations, including Ty Burrell and Ed O'Neill for best actor, Sofia Vergara for best actress, and a cast honor.
The SAG Awards is set to be simulcast live coast-to-coast on TNT and TBS on Jan. 30 at 5 p.m PST from the Shrine Auditorium in Los Angeles.
The Associated Press contributed to this story.