Gregor Piatigorsky, Ukrainian-American cellist and educator (d. 1976)

Gregor Piatigorsky (Russian: Григо́рий Па́влович Пятиго́рский, Grigoriy Pavlovich Pyatigorskiy; April 17 [O.S. April 4] 1903 – August 6, 1976) was a Russian-born American cellist.