Pierrepont-sur-Avre (French pronunciation: [pjɛʁpɔ̃ syʁ avʁ], literally Pierrepont on Avre) is a former commune in the Somme department in Hauts-de-France in northern France.

On 1 January 2019, it was merged into the new commune Trois-Rivières.

[2] The commune is situated on the D935 road, some 20 miles (32 km) southeast of Amiens, on the banks of the river Avre.

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