Cordillera Occidental is Spanish for "Western mountain". It may refer to:
- Cordillera Occidental (Colombia)
- Cordillera Occidental (Ecuador)
- Cordillera Occidental (Peru)
- Cordillera Occidental (Bolivia)
See also
- Sierra Madre Occidental, the Western mountain range in Mexico
- North American Cordillera, the Western mountain range in North America
- Cordillera Central (disambiguation)
- Cordillera Oriental (disambiguation)
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