The first person to walk on the moon was Neil Armstrong, an American astronaut, on July 20, 1969. He was the commander of the Apollo 11 mission, which was the first successful manned lunar landing. As he stepped onto the lunar surface, Armstrong famously declared, "That's one small step for [a] man, one giant leap for mankind." His achievement marked a significant milestone in space exploration and fueled interest in science and technology during the Cold War era. Neil Armstrong's successful moonwalk was watched by millions around the world, symbolizing human ingenuity and the spirit of exploration.