Peter Neumann may refer to:
Peter Neumann (Canadian football) (1931–2020), Canadian football player Peter G. Neumann (1932–2026), American computer science researcher Peter M. Neumann (1940–2020), British mathematician Peter R. Neumann (born 1974), political scientist
See also Peter de Neumann (1917–1972), British sailor, convicted pirate and dockmaster Peter Newman (disambiguation)