Fethi is the Turkish spelling of the Arabic name Fathi (Arabic: فَتْحِي fat·ḥiy/ fat·ḥī/ fat·ḥy) which means "victorious, triumphant". Notable people with the name include:
Fethi Benslama (born 1961), Paris-based Tunisian psychoanalyst
Fethi Boucetta (born 1963), Algerian Guantanamo detainee