Henri Gabriel Guist'hau (15 September 1863, Saint-Pierre, Réunion – 27 November 1931, Nantes, France) was a French politician.

[1][2] Guist'hau left Réunion for Nantes to study law there, and was elected to be mayor of Nantes in 1908.

He was elevated to Officer of the Légion d'honneur in 1924.

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