Five films were nominated for the 2026 Actor Award for cast in a motion picture.
The nominees were Frankenstein, Hamnet, Marty Supreme, One Battle After Another, and Sinners. Sinners won the award, making it the winning film among the five nominated casts.
The cast category evaluates the combined screen performances in a film. It is not an award for the largest number of credited actors, and a film can be nominated even when no individual performer from it wins a separate acting category.
The 2026 ceremony used the category as its top film ensemble honor. Its nominees represented a mixture of literary adaptation, original drama, comedy, action, and supernatural storytelling, showing the range of films considered by SAG-AFTRA voters.