Peter O'Donnell (1920–2010) was a British writer.
Peter O'Donnell may also refer to:
- Peter O'Donnell (sailor) (1939–2008), Australian sailor
- Peter O'Donnell (businessman) (1924–2021), American businessman, philanthropist and politician
See also
edit- Peadar O'Donnell (1893–1986), Irish writer and political activist
- List of people named O'Donnell