• Ida of Bernicia, King of a British state.
• Ida, a goddess of Hinduism.
• Saint Ida, also known as St Ita and St Ides, an Irish nun.
• Mount Ida
  • Mount Ida, Arkansas, a city (and mountain?) in Arkansas.
  • Mount Ida, Crete a mountain in Crete, inhabited by a nymph of the same name; nowadays sometimes called Psiloritis.
  • Mount Ida, Phrygia, a mountain in Phrygia
• Plain of Ida, the plain with Gladsheim and Vingolf in Norse mythology.
• 243 Ida, an asteroid.
• Ida River, a river in Slovakia

See also IDA for acronyms.