Lee Millar Sr. was an American actor and voice actor for film and radio. He was the husband of Verna Felton and father of Lee Millar.

For Disney, he provided the voice of Pluto in a number of Mickey Mouse, Donald Duck and Pluto cartoons, including Beach Picnic, The Pointer, Donald's Dog Laundry, Bone Trouble, Put-Put Troubles, Pluto's Dream House, Window Cleaners, Mr. Mouse Takes a Trip, Pantry Pirate, Pluto's Playmate, and A Gentleman's Gentleman.