Yes, twelve people have walked on the moon. All were American astronauts, and they landed on the moon between 1969 and 1972 as part of NASA's Apollo program.

Here are the names of the twelve astronauts who have walked on the moon:

* Neil Armstrong

* Buzz Aldrin

* Pete Conrad

* Alan Bean

* Alan Shepard

* Edgar Mitchell

* David Scott

* James Irwin

* John Young

* Charles Duke

* Eugene Cernan

* Harrison Schmitt