A.B. (Brian) McKillop (born 1946) is currently Chancellor's Professor and former Chair of the history department (2005–2009) of Carleton University in Ottawa, Ontario, Canada.
McKillop was born in Winnipeg, Manitoba and educated at the University of Manitoba (BA 1968, MA 1970) and Queen's University in Kingston, Ontario (PhD 1977). He was elected Fellow of the Royal Society of Canada in 2001.
A specialist in intellectual and cultural history, his books include:
The Spinster and the Prophet won the Toronto Book Awards, the University of British Columbia's President's Medal for Biography, and the Crime Writers of Canada Arthur Ellis Award for "Best True Crime".
In the fall of 2008 McKillop released Pierre Berton: A Biography, a comprehensive examination of the life of the late historian and media celebrity, Pierre Berton. The book won the Donald Grant Creighton of the Ontario Historical Society for best biography or memoir. It will appear as a trade paperback in September 2010.