Pierre Legardeur de Repentigny (French pronunciation: [pjɛʁ ləɡaʁdœʁ də ʁəpɑ̃tiɲi]; c. 1600 – 1648) was a military person and seigneur in New France.

He served as Governor Huault de Montmagny's lieutenant, as a director of the Communauté des habitants, and as admiral of the fleet for shipping in New France.

Legardeur helped found the Communauté des Habitants, who took over the fur trade monopoly from the Company of One Hundred Associates.

[1] Legardeur died at sea during a return trip to Canada from France in spring 1648 after an epidemic broke out on his ship.

His daughter Marie-Madeleine married Jean-Paul Godefroy and his daughter Catherine married Charles Joseph d'Ailleboust des Muceaux.