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 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)