The boy was with a group, including his uncle and four adult hunters, when he received a bullet in the head late in the morning, local police said.
The boy was transported by rescue officials to a hospital in Liille for treatment, La Voix du Nord newspaper reported.
The boy’s life was not in danger, the paper said.
Police have launched an investigation into the circumstances of the event.
Alcohol tests were conducted on all the adults accompanying the boy.
Meanwhile, another shooting accident claimed the life of François Corre, a 62-year-old hunter in Finistère, in northwestern France, on Sunday afternoon.
Corre apparently shot himself accidentally while with two other fellow hunters in Saint-Jean-du-Doigt, France-Ouest reported.
The incident occurred as he was traversing a fence separating two fields.
His colleagues called for emergency help but rescue officials were unable to resuscitate the man.
An investigation into the incident continues.
The accidents occurred as hunting season remained in full swing across rural areas of France.