Dennis Dugan (born September 5, 1946) is an American actor, director, and comedian. He is most famous for his partnership with comedic actor Adam Sandler, with whom he directed the films Happy Gilmore, Big Daddy, I Now Pronounce You Chuck and Larry, You Don't Mess with the Zohan, Grown Ups, Just Go with It, Jack and Jill, and Grown Ups 2.