Pyotr Ivanovich Lukirsky (Russian: Пётр Иванович Лукирский; 13 December 1894 – 16 November 1954) was a Soviet physicist who specialized in experimental physics in radiation and optics. He was a student of Abram Ioffe and became a fellow of the Physico-Technical Institute. He contributed to industrial developments as well as to crystallography and basic physics.