Peter Thomas McGuigan (December 29, 1942 – December 8, 2017) was a Canadian historian, freelance writer, and "a history buff and a meticulous chronicler of local heritage".Born in Halifax, Nova Scotia, a son of the late James and Stella McGuigan and a distant relative of James Charles McGuigan, McGuigan graduated from Dalhousie and Saint Mary's universities, and held a master's degree in Atlantic Canada Studies.