Leo or Léo may 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

Arts and entertainment

Music

* Leo (band), a Missouri-based rock band that was founded in Cleveland, Ohio * L.E.O. (band), a band by musician Bleu and collaborators

Film

* Leo (2000 film), ''Leo'' (2000 film), a Spanish film by José Luis Borau * Leo (2002 film), ''Leo'' (2002 film), a British-American drama film * ''Leo'', a 2007 Swedish film by Josef Fares * Leo (2012 film), ''Leo'' (2012 film), a Kenyan film * Leo the Lion (MGM), mascot of the Metro-Goldwyn-Mayer movie studio

Television

* Leo Awards, a British Columbian television award * "Leo", an List of Being Erica episodes#Season 1, episode of ''Being Erica'' * Léo, fictional lion in the animation ''Animal Crackers (TV series), 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

Name lists

* 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

Single names

* 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

Science and technology

Astronomy and space exploration

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

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 (astrology), an astrological sign * 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