Mejillones is a Chilean port city and commune in Antofagasta Province in the Antofagasta Region.

Mejillones (Spanish plural for mussel), can refer to:

• Puerto de Mejillones Province, a province in the western parts of the Bolivian department of Oruro
• Mejillones Peninsula protrudes from the coast of northern Chile north of Antofagasta and south of the port of Mejillones
• Municipal Mejillones, a Chilean football club

This disambiguation page lists articles associated with the title Mejillones.
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