- Saint John Ne·pom·u·cene [nuh–pom–uh-seen] /nəˈpɒm əˌsin/, 1811–60, U.S. Roman Catholic clergyman and educator, born in the Austrian Empire: canonized 1977.
- John von. Von Neumann, John.
- (German ˈnɔyman) Johann Balthasar (joˈhan ˈbaltazar). 1687–1753, German rococo architect. His masterpiece is the church of Vierzehnheiligen in Bavaria
- (ˈnjuːmən) See (John) von Neumann
- Hungarian-born American mathematician who contributed to mathematical theories about numbers and games. He was a leader in the design and development of high-speed electronic computers and also contributed to the field of cybernetics, a term he coined.