G. B. Harrison (14 July 1894 – 1 November 1991) was one of the leading Shakespeare experts of his time and the editor of the Shakespeare Penguin Classics. During his professional career, Harrison was an English professor at both Queen's University and the University of Michigan. He was a firm believer in traditional Catholicism and was a member of the Advisory Committee of the International Commission of English in the Liturgy. The Advisory Committee was in charge of overseeing and organizing work on a modern English translation of the Latin Mass. In his lifetime, Harrison had an active part in both World Wars and lived a civilian's life in four countries.