Calca may refer to:
- Calca Peninsula, a peninsula in South Australia
- Calca Province, one of thirteen provinces in the Cusco Region of Peru
- Calca District, one of the eight districts in the Calca Province
- Calca, Peru, capital of the Calca District and Province
- Calca, South Australia, a settlement on the west coast of Eyre Peninsula
- CALCA, the abbreviation for calcitonin-related polypeptide alpha
This disambiguation page lists articles about distinct geographical locations with the same name.
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