Libert may refer to:
- Lietbertus (1010—1076; also Libert, Libertus), bishop of Cambrai from 1051 to 1076
- Libert of Saint-Trond (d. 783; also Libertus), a Belgian saint
- Reginaldus Libert (1425—1435; also Liebert), a French composer of the early Renaissance
- Anne-Marie Libert (1782—1865), a Belgian botanist and namesake of the Libertia genus of monocotyledenous plants in the Iridaceae family
- Libert H. Boeynaems (1857—1926), fourth vicar apostolic of the Vicariate Apostolic of the Hawaiian Islands (now the Roman Catholic Diocese of Honolulu)
- Libertarian Party (disambiguation) or Libertarianism by abbreviation