Sylvia Keulen (born September 4, 1949 in Los Angeles, California) is an American animation timer and title designer. She served as a title designer and animation timer for As Told by Ginger. She is best known for her work on Rugrats, Aaahh!!! Real Monsters, All Grown Up!, Family Guy, The Avengers: Earth's Mightiest Heroes, The Wild Thornberrys and several others.
She directed the first episode of the series, Ginger the Juvey.