Saix, Saïx or SAIX may refer to:
Saïx, a commune in Occitania, France
Saix, Vienne, a commune in the Nouvelle-Aquitaine region of France
Saïx (Kingdom Hearts), a fictional video-game character
Tyler De Saix, pseudonym of Irish author Henry De Vere Stacpoole (1863–1951)
SAIX, the South African Internet Exchange
