Peter McCullagh is an Irish statistician, originally from Plumbridge, Northern Ireland. He attended Birmingham University and completed his Ph.D. at Imperial College London under David Cox and Anthony Atkinson. He is currently the John D. MacArthur Distinguished Service Professor in the Department of Statistics at the University of Chicago.
He is the coauthor with John Nelder of Generalized Linear Models (1983, Chapman and Hall – second edition 1989), a seminal text on the subject of generalized linear models (GLMs) with more than 23,000 citations.
McCullagh is a member of the Royal Society and the American Academy of Arts and Sciences. He won the COPSS Presidents' Award in 1990.
He also won a Notable Alumni Award in 2007 from his grammar school, St Columb's College in Derry, Northern Ireland.