Poul Henningsen (1894-1967) was a Danish author, critic, architect, and designer, who was one of the leading figures of the cultural life of Denmark between the World Wars. In Denmark, he often is referred to, simply, as PH. His novel designs are featured in many museums.

His most valuable contribution to design was in the field of lighting. He designed the PH-lamp in 1925, which, like his later designs, used carefully analyzed reflecting and baffling of the light rays from the bulb to achieve glare-free and uniform illumination. His light fixtures were manufactured by Louis Poulsen. His best-known models are the PH Artichoke and PH5.