Porfiry Ivanovich Bakhmetev (26.02.1860—14.10.1913) was a Bulgarian physicist and a member of the Bulgarian Academy of Sciences. He was born in the village of Lopukhovka in the former Saratov province. He graduated from the University of Zurich (1884). From 1890 he taught at the University of Sofia (from 1895 as professor). In 1913 he was professor of biophysics at the A. L. Shanyavsky University.
His work concerned ferromagnetism, thermoelectricity and biophysics. He studied the phenomenon of anabiosis. He was the founder of the Physical and Mathematical Society in Sofia (1898).