Dumortier
Dumortier is the last name of several people:
- Augustin Dumon-Dumortier (1791–1852), Belgian politician and President of the Senate
- Barthélemy Charles Joseph Dumortier (1797–1878), Belgian botanist
- François-Xavier Dumortier (* 1948), French theologian
- Isidore Marie Joseph Dumortier (1869–1940), Roman Catholic Bishop and Apostolic Vicar of Saigon