Piotr Dmitrievich Buchkin (Russian: Пё́тр Дми́триевич Бучки́н; 22 January 1886 – 21 June 1965) was a Soviet and Russian painter, watercolorist, graphic artist, illustrator, and art teacher, Honored Arts Worker of the RSFSR. Buchkin lived and worked in Leningrad and was a member and a one of the founders of the Leningrad branch of Union of Artists of Russian Federation and representatives of the Leningrad school of painting, most famous for his portrait painting.