Gaston of Foix (Gaston de Foix) may refer to:
Gaston I of Foix-Béarn (d. 1315) Gaston II of Foix-Béarn (1308–1343) Gaston III of Foix-Béarn (1331–1391) Gaston IV, Count of Foix (1422–1472) Gaston of Foix, Prince of Viana (1444–1470) Gaston of Foix, Duke of Nemours (1489–1512) Gaston de Foix, Count of Candale (d. 1500)