Dinéault (French pronunciation: [dineɔl]; Breton: Dineol) is a commune in the Finistère department and administrative region of Brittany in north-western France.

In French the inhabitants of Dinéault are known as Dinéaultais.

The Menez Hom, a mountain that offers an exceptional panoramic view of the Finistère, is located in the commune.

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