Daniel D. Fernández (June 30, 1944 – February 18, 1966) was a United States Army soldier in the Vietnam War who received the U.S. military's highest decoration, the Medal of Honor. Fernández was awarded the medal for his actions in Hậu Nghĩa province, Republic of Vietnam, in February 1966 — throwing himself on a live grenade, he sacrificed his life to save lives of the soldiers around him.