John Greville Agard Pocock (born 7 March 1924) is a historian of political thought from New Zealand. He is especially known for his studies of republicanism in the early modern period (mostly in Europe, Britain, and America), his work on the history of English Common Law, his treatment of Edward Gibbon and other Enlightenment historians, and, in historical method, for his contributions to the history of political discourse.
Born in England, Pocock spent most of his early life in New Zealand. He moved to the United States in 1966, where since 1975 he has been a tenured professor at Johns Hopkins University in Baltimore.
Pocock was born in London in 1924, but in 1927 moved with his family to New Zealand where his father, Greville Pocock, was appointed professor of Classics at Canterbury College. He later moved to Cambridge, earning his PhD in 1952 under the tutelage of Herbert Butterfield. He returned to New Zealand to teach at Canterbury University College from 1946 to 1948, and to lecture at the University of Otago from 1953 to 1955. In 1959, he established and chaired the Department of Political Science at the University of Canterbury. He moved to the USA in 1966, where he was given the title of William Eliot Smith professor of history at Washington University in St. Louis, Missouri. In 1975 Pocock assumed his present position at Johns Hopkins University, Baltimore; As of 2011[update] he holds the position of the Harry C. Black Emeritus Professor of History.