Piatigorsky, a Jewish surname of Russian origin (means "from Pyatigorsk"), may refer to: Alexander Piatigorsky, Russian philosopher Anton Piatigorsky, Canadian-American playwright and writer Gregor Piatigorsky, cellist Jacqueline Piatigorsky, née Rotschild, chess and tennis player and philanthropist, wife of G. Piatogorsky Leonid Piatigorsky, Soviet physicist