Jean Keuleyan Lafon (1886–1973) was a French landscape and seascape painter, born in Paris on March 22, 1886, into a family of artists. To distinguish his work from that of his father, François Lafon, and grandfather, Jacques-Emile Lafon—both respected history painters—he often signed his pieces “Jean Keuléyan-Lafon.” Specializing in atmospheric coastal scenes, particularly moonlit seascapes and sunsets, he captured the distinctive light of the French coast with notable sensitivity. Lafon exhibited at the Salon de l’Ecole Française and in galleries in Paris and Vichy, and was a member of the Société Nationale des Beaux-Arts. During World War I, he was held as a prisoner of war in Muncheberg, Germany. In his later years, he painted extensively along the Côte d’Azur, especially near Agay and Toulon. He died in Saint-Raphaël in 1973, and his works are held in French museums and continue to be offered at auction.