There have been six successful landings of spacecraft on the Moon by humans:

* Apollo 11 (1969) - First human landing on the Moon

* Apollo 12 (1969)

* Apollo 14 (1971)

* Apollo 15 (1971)

* Apollo 16 (1972)

* Apollo 17 (1972)

It's important to note that there have been many other robotic spacecraft that have landed on the Moon, but these six missions were the only ones to carry humans.