People's Princess is a nickname for Diana, Princess of Wales.
People's Princess or Princess of the People may also refer to:
- The People's Princess (radio play), BBC Radio 4 2008 radio play
- Princess Mary Adelaide of Cambridge (1833-1897), mother of Queen Mary of Teck
- Kaʻiulani (1875-1899), last heir apparent to the Hawaiian Kingdom
- Kaiulani: The People's Princess, a 2001 novel by Emily Emmerson White in the series The Royal Diaries
- Tuathflaith, an Irish name whose meaning is "Princess of the People"
- Fremu (titled folces cwen meaning "people's princess"), the queen consort of King Offa from the epic poem Beowulf