El nombre Royal, con mucho ha sido, el que mayor número de firmas han usado.
ROYAL (Basel), ROYAL (Mitte), ROYAL (München), ROYAL (New York), ROYAL (Objat), ROYAL AJAX, ROYAL BOSCOMBE, ROYAL CAVENDISH, ROYAL CLASSIC, ROYAL CONSORT, ROYAL DAUPHINE, ROYAL DEFIANCE, ROYAL EAGLE, ROYAL ENFIELD, ROYAL ENFIELD (Madras), ROYAL EXPRESS, ROYAL FABRIC, ROYAL GEORGE, ROYAL HISPANIA, ROYAL MAIL, ROYAL MOTO (Rosières), ROYAL MOTO (Saint-Étienne), ROYAL NELLY, ROYAL NORD (Hasselt), ROYAL NORD (Léopoldville), ROYAL PHLOX, ROYAL PIONEER, ROYAL PRINCE, ROYAL ROEBUCK, ROYAL RUBY, ROYAL RYDAL, ROYAL SCOT, ROYAL SOVEREIGN, ROYAL SPORT, ROYAL STANDARD, ROYAL START, ROYAL SUPER, ROYAL TASMAN TRIUMPH y ROYAL WELLINGTON.