Paul Ranson (1864 - Paris, February 20, 1909) was a French painter and writer.

He was born in Limoges. He met Paul Sérusier in 1888 at the Académie Julian, and subsequently became a member of the Nabis group. He was the one who introduced the Nabi language within the group.

In 1908, he created the Académie Ranson with his wife France , to teach the Nabi ideas and techniques. After his death in Paris 1909, his wife continued to run the academy.