Barry Nicholas

John Keiran Barry Moylan Nicholas (1919 - 2002) was a British legal scholar. He began teaching at Brasenose College at Oxford University in 1946, and served as principal of the college from 1978 to 1989. He gave up the position at the appointed age of 70, but he did not retire. He additionally served as Professor of Comparative Law at the University of Oxford from 1971 to 1978.

Nicholas' An Introduction to Roman Law is a standard text in the study of Roman law.