Paul de Cassagnac
- Category : 1842-births
- Type : MGP
- Profile : 5/1 - Heretical / Investigator
- Definition : Split - Large
- Incarnation Cross : LAX Identification 2
French journalist, the son of journalist and politician Adolphe Granier de Cassagnac (1806-1880).
In 1866, he became editor of the Conservative paper Le Pays, and figured in a long series of political duels. On the declaration of war in 1870 he volunteered for service and was taken prisoner at Sédan.
On his return from prison in a fortress in Silesia he continued to defend the Bonapartist cause in Le Pays, against both Republicans and Royalists. Elected deputy for the department of Gers in 1876, he adopted in the chamber a policy of obstruction "to discredit the republican régime".
He died on 4 November 1904.