Anthony Patrick Cawthra Adamson, OC (October 7, 1906 – May 3, 2002) was a Canadian architect, author, teacher, and municipal politician. He was a descendant of Joseph Cawthra through his mother. Born in Toronto, Ontario to Colonel Agar Adamson and Mabel Cawthra, he grew up in Port Credit, Ontario on the family estate, before reading Architecture at the University of Cambridge and at the University of London. Adamson was a Fellow of the Royal Architectural Institute of Canada, and in 1974, he was appointed an Officer of the Order of Canada.