George E. Kassabaum (December 5, 1920 – August 14, 1982) was an American architect, and one of the co-founders of the HOK architectural firm.
Early life
George Edward Kassabaum was born in Atchison, Kansas. He was the only child of George Kassabaum and Dorothy Kassabaum. From a very young age he expressed an interest in becoming an architect. He graduated from Classen Senior High School in Oklahoma City in 1938.
He attended Washington University in St. Louis where he met his future partners, George Hellmuth and Gyo Obata. He earned both a bachelor's and master's degrees in architecture before graduating in 1947.
Kassabaum graduated in 1947 and began working for a local architecture firm in St. Louis founded by two faculty members of Washington University.