Gratiosus may refer to:
People Gratiosus, member of the Gregorian mission and fourth abbot of St Augustine's, Canterbury (626–638) () () (died 750) (8th century), Byzantine duke Gratiosus (archbishop of Ravenna) () Gratiosus de Padua ( 1391–1407), Italian composer
Science gratiosus, common specific name, meaning gracile
See also Grazioso (disambiguation)