San Juan is a province of Argentina, located in the west of the country. The capital is San Juan. The province has a population of 620,023 (2001), and covers an area of 89,651 km². Neighbouring provinces are, from the north clockwise, La Rioja, San Luis and Mendoza. To the west is Chile.

The province is divided into 19 departments (in Spanish, departamentos).

Department (Capital)

1. Albardón (Albardón)
2. Angaco (Villa del Salvador)
3. Calingasta (Calingasta)
4. Capital (San Juan)
5. Caucete (Caucete)
6. Chimbas (Villa Paula A. de Sarmiento)
7. Iglesia (Rodeo)
8. Jáchal (San José de Jáchal)
9. Nueve de Julio (Nueve de Julio)
10. Pocito (Villa Alberastain)
11. Rawson (Villa Krause)
12. Rivadavia (Rivadavia)
13. San Martín (Villa San Isidro)
14. Santa Lucía (Santa Lucía)
15. Sarmiento (Villa Media Agua)
16. Ullúm (Ullúm)
17. Valle Fértil (San Agustín del Valle Fértil)
18. Veinticinco de Mayo (Villa Santa Rosa)
19. Zonda (Zonda)