San Cayetano (Saint Cajetan in English) was a Catholic saint (1480-1547), and may refer to:
San Cayetano, Buenos Aires, capital of San Cayetano Partido San Cayetano Partido, Buenos Aires Province, Argentina San Cayetano, Norte de Santander, Colombia San Cayetano, Cundinamarca, Colombia San Cayetano (Asunción), a neighborhood of Asunción, Paraguay