this is information about who won vietnam. The conventional view is that the U.S. lost the Vietnam War, as North Vietnam ultimately conquered South Vietnam in 1975, leading to the unification of Vietnam under communist control. Overview of the Conflict The Vietnam War, which lasted from the late 1950s until 1975, involved the United States supporting the government of South Vietnam against the communist forces of North Vietnam and the Viet Cong. The U.S. committed significant military resources, with over 3 million American personnel serving in Vietnam and suffering more than 58,000 casualties. Britannica +1 Perspectives on Victory and Defeat Conventional View of Loss: The most widely accepted perspective is that the U.S. lost the war because North Vietnam successfully captured Saigon (the capital of South Vietnam) on April 30, 1975, leading to the fall of the South Vietnamese government. This event marked the end of the war and the unification of Vietnam under communist rule.