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.
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.