Grigoris Lambrakis (Greek: Γρηγόρης Λαμπράκης; 3 April 1912 – 27 May 1963) was a Greek politician, physician, track and field athlete, and member of the faculty of the School of Medicine at the University of Athens. A member of the Greek resistance to Axis rule during World War II, he later became a prominent anti-war activist. His assassination by right-wing zealots provoked mass protests and led to a political crisis.