• Clio (muse), the muse of heroic poetry and history in Greek mythology.
• Clio, the name of one of the Oceanids
• Clio, the name of one of the Nereids
• Clio, a girl's given name, sometimes spelled Cleo, Klio, or Kleio

Places

United States

• Clio, Alabama
• Clio, California
• Clio, Iowa
• Clio, Michigan
• Clio, South Carolina

Greece

• Clio, Greece, a small village located in the north of Lesbos Island

Ships

• HMS Clio (1806)
• HMS Clio (1858)

Other

• Renault Clio, a compact French hatchback car
• Renault Clio Cup, aone make racing series dedicated to the car.
• The Clio Awards, for best in advertising and design
• CLIO, the information server that used [(protocol)] to provide access to information in the National Archives and Records Administration
• Vadem Clio, a handheld PC
• CLIO, Cryogenic Laser Interferometer Observatory for a gravitational wave detector prototype in Japan.

See also

• 84 Klio, an asteroid
• Clioidae, the family of sea butterflies