The actor, 36, proved he knows how to pack a punch while filming a scene for Queen of the Night in Sudbury, Canada, on Tuesday.
On the receiving end of Reynolds's fist is his costar, Scott Speedman.
Directed by Atom Egoyan, the thriller is focused around a father trying to locate his kidnapped daughter.
In addition to Reynolds and Speedman, the movie also stars Rosario Dawson.
But it hasn't been all work and no play for Reynolds, who has been filming in frigid temperatures. Wife Blake Lively – donning lots of warm layers – recently joined him in Sudbury for a date at the movies.