Gideon Koren, FACMT, FRCP(C) (Hebrew: גדעון קורן‎; born August 27, 1947 in Tel Aviv, Israel) is an Israeli-Canadian pediatrician, clinical pharmacologist, toxicologist, and a composer of Israeli popular music. He was a doctor at the Hospital for Sick Children and a professor at the University of Toronto. In 1985, Koren founded the Motherisk Program in Toronto, which was later shut down amid controversy. Furthermore, multiple scientific papers authored by Koren have been subject to concerns regarding academic and research misconduct, leading to the retraction of five research articles and editorial expression of concerns on multiple others. Koren currently has relinquished his licence to practice medicine due to an ongoing investigation into whether he committed “professional misconduct or