Gradisca d'Isonzo (Friulian: Gardiscja or Gardiscje, Slovene: Gradišče ob Soči, archaic German: Gradis am Sontig) is a town and comune of the Province of Gorizia in Friuli-Venezia Giulia, north-eastern Italy. The lawyer, linguist, philologist Philippe Sarchi was born in Gradisca d'Isonzo.