How many people went to the Moon twice?
Thirty-two astronauts were assigned to fly in the Apollo manned lunar landing program. Of these, twenty-four left Earth’s orbit and flew around the Moon on nine missions. (Of the other manned missions, Apollo 1 did not launch and Apollo 7 and Apollo 9 were low Earth orbit spacecraft testing missions.)
Twelve of these astronauts walked on the Moon’s surface, and six of those drove Lunar Roving Vehicles on the Moon. While three astronauts flew to the Moon twice (Capt. Gene Cernan USN , Capt. James Lovell USN , Capt. John Young USN), none of them landed on the Moon more than once. The nine Apollo missions to the Moon occurred between December 1968 and December 1972.