Saint-Castin (; ) is a commune in the Pyrénées-Atlantiques department in south-western France.INSEE commune file It is located about 15 km north of Pau and 12 km east of Pau-Pyrenees Airport.
The village was the home of the Abbadie de Saint-Castin family of Canadian settlers.
See also Communes of the Pyrénées-Atlantiques department
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