Orvault (French: [ɔʁvo] ⓘ; Gallo: Orvao, Breton: Orvez) is a commune in the Loire-Atlantique department in western France.

It is the fourth-largest suburb of the city of Nantes, and is adjacent to it on the northwest.

The population of Orvault is increasing, 28 607 people in 2023.

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