- Source: Peter Arnold
- Peter Dennis Mitchell
- Peter Courtland Agre
- Arnold Fanck
- Arnold Paole
- Arnold Kopelson
- The Terminator
- Frances Arnold
- Predator (film)
- Arnold Sommerfeld
- Arnold Bax
- Peter Arnold
- Arnold Peter Møller
- Peter Arnold (politician)
- Peter Arnold-Craft
- Peter Arnold (cricketer)
- Arnold Schwarzenegger
- Peter Arnold Heise
- Peter Arnold (musician)
- Arnold Brown (politician)
- Arnold von Lasaulx
Peter Arnold may refer to:
Peter Arnold (cricketer) (1926–2021), New Zealand cricketer
Peter Arnold (politician) (born 1935), Australian politician
Peter Arnold (musician), British piano professor