Jan Brunon Bułhak (1876–1950) was a pioneer of photography in Poland and present-day Belarus and Lithuania, and one of the best-known Polish photographers of the early 20th century. A theoretician and philosopher of photography, he was among the most prominent exponents of pictorialism. He is best known for his landscapes and photographs of various places, especially the city of Vilnius (then in Poland, now in Lithuania). He was the founder of the Wilno Photoclub and Polish Photoclub, the predecessors of the modern Union of Polish Art Photographers (ZPAF), of which he was an honorary headperson. He is also known as an ethnographer and folklorist.