Pierre-Maximilien Delafontaine (1777 – 1 December 1860) was a French painter. After a long illness he re-established himself as a bronze sculptor.

He was born in Paris to Jean-Baptiste-Maximilien Delafontaine and Marie-Louise de La Brière. He studied under Jacques-Louis David. He exhibited at the Paris Salons 1798 and 1799. According to the Salon catalogues, he lived at 123 rue Saint-Honoré, in the Hôtel d'Aligre. On 23 June 1800 he married Émilie-Claude Herbillon from the Pont-sur-Seine. He died in Paris.

• The Skater (Bertrand Andrieu), 1798 (Hôtel de la Monnaie)
• Portrait of Xavier Bichat, 1799 (Musée national du Château de Versailles, )
• Portrait of Alexandre Lenoir, 19th century ()

• The Skater (Bertrand Andrieu), 1798 (Hôtel de la Monnaie)
• Portrait of Xavier Bichat, 1799 (Musée national du Château de Versailles)
• Portrait of Alexandre Lenoir, 19th century