George Theodore Felbeck (February 1, 1897 - March 1, 1962) was an American businessman who was born in Salina, Kansas, United States to Lewis and Matilda Felbeck. He married Helen Mildred née Kniseley on November 5, 1919. Felbeck was a graduate of the University of Illinois where he received his B.S.M.E. degree in 1919 and his M.S.M.E. degree in 1921. He left college in 1918 to serve in the infantry of the U.S. Army. While at Illinois he was a member of Sigma Pi fraternity. He received his Ph.D. in physical chemistry from the California Institute of Technology in 1943.