George Walker (1645-1690) was an English soldier and Anglican priest, known as the Defender of Derry.
George Theophilus Walker (born June 27, 1922) is an African-American composer, the first to win the Pulitzer Prize for Music. He received the Pulitzer for his work Lilacs in 1996.
Professor George Walker is a British educator, and the former director-general of the International Baccalaureate Organisation. He is also a productive author of articles and other works regarding international education and physical chemistry.