Pierre Mandonnet (26 February 1858 – 4 January 1936) was a French-born, Belgian Dominican historian, important in the neo-Thomist trend of historiography and the recovery of medieval philosophy.

[1][2] He made his reputation with a study of Siger of Brabant.

[3] Pierre Mandonnet was born in Beaumont, Puy-de-Dôme on 4 January 1936.

[4][5] In 1887 he was ordained as a priest, and from 1891 to 1919, was a professor of church history at the University of Fribourg.

[6] He died in Le Saulchoir on 4 January 1936.