César Pattein was a French painter.
Pattein studied under French Naturalist painter Jules Breton.
He was exhibited at the Salon des Artistes Français in Paris, where he was awarded a third-class medal in 1896.
Born in Steenvoorde, in northern France, Pattein was raised among farmers and maintained a close connection to the rural region throughout his life.

He seldom travelled much further than Lille, with the occasional journey to Paris when exhibiting at the Salon.
While he experimented in his early career with portraiture and historical and religious subjects, Pattein was apt to represent agrarian traditions and rustic rituals, particularly those involving the harvest or other celebrations of agrarian abundance; this eventually led him to the atelier of Jules Breton in the mid-1880s.