Pierre-Rose-Ursule Dumoulin-Borie (20 February 1808 – 24 November 1838) was a French Catholic missionary priest and a member of the Paris Foreign Missions Society.
Pierre Dumoulin-Borie had as a godfather his uncle Pierre Borie, a priest refractory during the Revolution, and then curé of Sionac; but an uncle, Jean Borie, was an administrator of Corrèze, deputy in the Legislative Parliament and Convention, and one of those who voted for the death of Louis XVI.
Pierre's godfather undertook the first rudiments of his education before he left for the Seminary of Servières in 1824.
He was ordained a priest in Bayeux on 21 November 1830, Pierre was sent overseas, reaching Macao on 18 July 1831.
Pierre was arrested in 1838, and he learned in prison that he had been named titular bishop of Acanthus on 30 January 1836.