The 1960s (pronounced "nineteen-sixties", shortened to the "'60s" or the "Sixties") was the decade that began on January 1, 1960, and ended on December 31, 1969.

While the achievements of humans being launched into space, orbiting Earth, performing spacewalks, and walking on the Moon extended exploration, the Sixties are known as the "countercultural decade" in the United States and other Western countries. There was a revolution in social norms, including religion, morality, law and order, clothing, music, drugs, dress, sexuality, formalities, civil rights, precepts of military duty, and schooling. Some people denounce the decade as one of irresponsible excess, flamboyance, the decay of social order, and the fall or relaxation of social taboos. A wide range of music emerged, from popular music inspired by and including the Beatles (in the United States known as the British Invasion) to the folk music revival, including the poetic lyrics of Bob Dylan. In the United States the Sixties were also called the "cultural decade" while in the United Kingdom (especially London) it was called the Swinging Sixties.

The United States had four presidents that served during the decade: Dwight D. Eisenhower, John F. Kennedy, Lyndon B. Johnson and Richard Nixon. Eisenhower was near the end of his term and left office in January 1961, and Kennedy was assassinated in 1963. Kennedy had wanted Keynesian and staunch anti-communist social reforms. These were passed under Johnson including civil rights for African Americans and health care for the elderly and the poor.