Léhon (French pronunciation: [le.ɔ̃]; Breton: Lehon; Gallo: Léon) was a former commune in the Côtes-d'Armor department of Brittany in northwestern France.

On 1 January 2018, it was merged into the commune of Dinan.

[2] Inhabitants of Léhon were called léhonnais in French.

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