Beaumont-sur-Oise (French pronunciation: [bomɔ̃ syʁ waz] ⓘ, literally Beaumont on Oise) is a commune in the Val-d'Oise department in Île-de-France in northern France.

The classical cellist Jean-Henri Levasseur (1764–1823) was born in Beaumont-sur-Oise.

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