Peter Gabriel Neumann (born 1932) is a computer-science researcher who worked on the Multics operating system in the 1960s.

While a student at Harvard, he had a two-hour breakfast with Albert Einstein, on 8 November 1952, discussing simplicity in design.

Before the RISKS mailing list, Neumann was known for the Provably Secure Operating System (PSOS).

[8][9] Neumann has long served as moderator of RISKS Digest and is a member of the ACCURATE project.

[11] In 2018, Neumann received the EPIC Lifetime Achievement Award from Electronic Privacy Information Center.