Allaines-Mervilliers (French pronunciation: [alɛn mɛʁvilje]) is a former commune in the Eure-et-Loir department in northern France.

It was created in 1973 by the merger of two former communes: Allaines and Mervilliers.

[2] On 1 January 2019, it was merged into the new commune of Janville-en-Beauce.

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