Peter Gregory
Peter Gregory may refer to:
- Peter Gregory (doctor), team doctor for the England cricket team
 - Peter H. Gregory, American computer security writer
 - Peter Gregory (footballer) (born 1992), English footballer
 - Eric Craven Gregory (1887–1959), also known as Peter Gregory, British publisher and arts benefactor
 - Peter Gregory (academic), professor at the University of Reading
 - Peter Gregory (Silicon Valley), a television character