Baron François du Four (Turnhout, Belgium, 1871 – 1945) was a Belgian industrialist.
When his mother, Josephina Frederika Dessauer, died in 1904, he became the owner of the family business Brepols, a paper – and playing card factory.
In 1929, King Albert I of Belgium knighted him and granted him the title of baron.
The heraldic motto of the du Fours is Melius esse quam vider, which means it is better to be than to seem, and their own weapon-shield represents a lion.
In 1905, he started with the construction of the park where now the castle of Retie stands.