Endre Grastyán (February 25, 1924 in Oriszentpeter – June 17, 1988 in Pécs) was a Hungarian medical doctor, physiologist, professor, and member of the Hungarian Academy of Sciences.
He was a groundbreaking researcher in physiology, studying under Janos Szentagothai.
His students include Peter Somogyi, Tamas Freund and György Buzsáki.