Robert Wellington Mayhew, PC (October 13, 1880 – July 28, 1971) was a Canadian politician and diplomat.
Born in Cobden, Ontario, the son of Charles Mayhew and Sarah Dunlop Mayhew, he founded the Sidney Roofing and Paper Co. Ltd. in 1912 which became one of Victoria's largest businesses.
[1] He was elected to the House of Commons of Canada for the riding of Victoria in a 1937 by-election.
[2] In 1951, in San Francisco, along with Lester B. Pearson, he signed, on behalf of Canada, the Peace Treaty with Japan.
His only daughter, Jean Edwards Mayhew, married to James Alexander Lawrason, died January 5, 2006, in Peterborough, Ontario.