The United States has sent six crewed missions to the moon:

* Apollo 11 (1969) - First humans to walk 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 uncrewed missions to the moon, including robotic probes and spacecraft. These missions have played a vital role in lunar exploration and scientific discovery.