Jules-Alexandre Grün (1868–1938) was a French painter, illustrator, and poster artist whose works vividly capture the elegance, charm, and social vibrancy of Paris during the Belle Époque. He is best remembered for his large-scale, color-rich depictions of Parisian high society—dancers, cabaret performers, and fashionable gatherings—often infused with humor, warmth, and a keen sense of observation.