The East Coast actors were shooting a scene for the crime caper "Stand Up Guys" Monday when Pacino got hurt and was treated by medics on the set, the Post said.
No other information about the injury or exactly how it happened was immediately available.
Set for release next year, the movie stars Pacino, 72, and Walken, 69, as con men trying to get their gang back together.
Selena Gomez drops F-bomb, walks off stage during Jingle Ball performance
Ukrainian protestors topple Lenin statue [VIDEO]