Michel-Celse-Roger de Bussy-Rabutin (1669 – 3 November 1736) was a French churchman and diplomat.

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The second son of Count Roger de Bussy-Rabutin, he served as Bishop of Luçon from 1723 until his death. He attended the salon of Madame de Tencin; he was elected to the Académie française on 21 February 1732, without having written a single work, being sponsored into the French Academy by Fontenelle the following 6 March. In 1735 he commissioned a portrait of himself by Hyacinthe Rigaud without knowing how he would pay for it – the artist's accounting books state "Monsieur the Bishop of Luçon, Bussy-Rabutin. Remains half-finished.".^[1]

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