Names in regular type refer to official designations, names in italics refer to previous names or local nicknames

  • O'Hara Key
  • Ocean Reef
  • Oglethorpe
  • Ohio Key
  • Old Matecumbe
  • Old Rhodes Key
  • Old Road
  • Onion Key
  • Oswald Island
  • Otter Key
  • Oyster Kays
  • Oyster Keys