The Saturn V Moon Rocket was a multistage liquid-fuel rocket which was a concept developed by Wernher von Braun and a team of German scientists.
To be fair, the Mercury, Gemini and Apollo spacecraft (and the Shuttle for that matter) were developed by Max Faget (born in British Honduras). And without the spacecraft, the rockets had nothing to send the astronauts up in. The Lunar Module was designed and built by Grumman Aircraft.