Francis de Croisset (; born Franz Wiener, 28 January 1877 - 8 November 1937) was a Belgian-born French playwright and opera librettist.

Early life

Born as Franz Wiener, he was educated in Brussels on 28 January 1877 into a prominent Jewish-Belgian family that was distinguished in diplomacy and the army. His parents were Alexandre Jacques Wiener and Eugenie

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