Henri Cassiers (1868-1944) was a Flemish poster artist and illustrator. He studied architecture in Brussels and took courses at the Académie royale des Beaux-Arts, but as a painter he was largely self-taught. He had hist first exhibition in 1881, and when that turned out to be well received, he quit architecture for good and became a professional artist instead, focusing mainly on commercial illustration. With the Red Star Line shipping company he established a long-term collaboration, creating posters and other advertising material for them for twenty-five years. He also designed many postcards chronicling everyday life in Belgium and the Netherlands.