Matthew Quincy Daddario (born October 1, 1987) is an American actor, best known for his roles in the films When the Game Stands Tall and Naomi and Ely's No Kiss List.

For Disney, he had a role in the movie Delivery Man and is currently stars as Alec Lightwood on the Freeform series Shadowhunters.

He is the younger brother of actress Alexandra Daddario.