Niagara Herald of Arms Extraordinary (Héraut Niagara extraordinaire in French) is the title of one of the officers of arms at the Canadian Heraldic Authority in Ottawa. Herald Extraordinary is an honorary position reserved for people who have made notable contributions to Canadian heraldry. Like the other heralds at the Authority, the name is derived from the Canadian river of the same name.
A badge of office was granted on May 2, 2001, and is blazoned On a compass rose of sixteen points Gules, a plate fimbriated Gules charged with three pallets wavy Azure. The wavy lines indicate water; the use of vertical lines represents both the south to north direction of the river, and also the Niagara Falls. The compass shows direction, and thus represents national and international reach, both for the river (as part of the Saint Lawrence/Great Lakes transportation system) and for heraldry.