Piotr Dmitrievich Buchkin (Russian: ??´?? ???´??????? ?????´?; 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 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.