Rex Grignon (born June 11, 1962) is a Canadian-American animation director and entrepreneur. Grignon received his animation training at Sheridan College where he graduated in 1984. He then earned his Bachelor's Degree in 1985 from New York Institute of Technology. He worked in Europe for two years as a staff animator and Art Director in Frankfurt and Paris, mostly working on early 3D commercials and broadcast graphics. Grignon moved to the U.S. in 1988 where he worked for Pacific Data Images as a Senior Animator and co-founded PDI's Character Animation Group with Tim Johnson.