Dalton McCarthy
 Dalton McCarthy (October 10 1836 – May 11 1898) or D'Alton McCarthy was a Canadian lawyer and parliamentarian. It was his firm Boulton & McCarthy in Barrie that was the first incarnation of what is now Canada's largest law firm McCarthy Tétrault. McCarthy was first elected to the Canadian House of Commons in the 1878 federal election as a Conservative. An Irish-born Protestant McCarthy was stridently anti-Catholic and anti-French Canadian.