Leo

Leo is the Latin word for lion. It most often refers to:
 * Leo (constellation), a constellation
 * Leo (astrology), an astrological sign of the zodiac

The terms Leo or Léo may also refer to:

Acronyms

 * Law enforcement officer
 * Law enforcement organisation
 * Louisville Eccentric Observer, a free weekly newspaper in Louisville, Kentucky
 * Michigan Department of Labor and Economic Opportunity

Music

 * L.E.O. (band), a band by musician Bleu and collaborators
 * Leo (soundtrack), soundtrack album by Anirudh Ravichander for the 2023 Indian film

Film

 * Leo (2000 film), a Spanish film
 * Leo (2002 film), a British-American film
 * Leo, a 2007 Swedish film by Josef Fares
 * Leo (2012 film), a Kenyan film
 * Leo (2023 American film), an animated musical comedy
 * Leo (2023 Indian film), a Tamil-language action thriller
 * Leo the Lion (MGM), mascot of the Metro-Goldwyn-Mayer film studio seen at the beginning of MGM films

Television

 * Leo Awards, a British Columbian television award
 * "Leo", an episode of Being Erica
 * Léo, fictional lion in the animation Animal Crackers
 * Léo, 2018 Quebec television series created by Fabien Cloutier

Companies

 * Leo Namibia, former name for the TN Mobile phone network in Namibia
 * Leo Pharma, an international pharmaceutical company, based in Denmark
 * Leo Records, an English jazz record label
 * Lioré et Olivier, a French aircraft manufacturer from 1912 to 1937
 * The Leo Group, a waste-recycling company based in Halifax, England

People and fictional characters

 * Leo (given name), a list of people and fictional characters with the given name or nickname
 * Léo, a list of people with the given name
 * Leo (surname), a list of people
 * Leonid dynasty, also known as the House of Leo, a Byzantine dynasty
 * Arakel Babakhanian (1860–1932), known by his pen name Leo, Armenian historian
 * Leo (singer) (born 1990), South Korean pop musician
 * Léo (footballer, born 1975), full name Leonardo Lourenço Bastos, Brazilian football leftback
 * Leo (footballer, born November 1989), full name Leonardo Passos Alves, Brazilian football striker
 * Leo (footballer, born December 1989), full name Leandro Mariano da Silva, Brazilian football striker
 * Léo (footballer, born 1990), full name Leonardo da Silva Vieira, Brazilian football goalkeeper
 * Léo (footballer, born 1992), full name Leonardo José Peres, Brazilian football forward
 * Leo (wrestler) (born 1989), Mexican professional wrestler
 * Luiz Eduardo de Oliveira or Léo (born 1944), Brazilian comics writer

Places

 * Léo Department, a department or commune of Sissili Province in southern Burkina Faso
 * Léo, Burkina Faso, the capital city of Sissili Province and Léo Department
 * Leo, a village that was merged into Leo-Cedarville, Indiana, U.S.
 * Leo, Ohio, U.S.
 * Leo, West Virginia, U.S., a ghost town
 * Leo Islands, Nunavut, Canada

Astronomy and space exploration

 * Low Earth orbit, a satellite path
 * Launch and Early Orbit phase, a crucial phase of a space mission
 * LEO (spacecraft), a lunar mission

Biology

 * Leo (horse), an American Quarter Horse
 * Leonberger or Leo, a breed of dog
 * Long-term Ecosystem Observatory, a marine study project
 * Leo, an obsolete genus now in Panthera

Computing

 * LEO (computer), the first commercially used computers
 * Leo (text editor), a computer program

Sports

 * BC Lions or Leos, a Canadian Football League team
 * The PBA Leo Awards, annual Philippine Basketball Association awards

Other uses

 * LEO (website), a group of dual-language dictionaries and discussion forums
 * Leo Petroglyph, a series of ancient stone carvings
 * Leo clubs, youth branch of Lions Clubs International
 * Leotard, a skin-tight one-piece garment.