Cao

Cao or CAO may refer to:

Companies or organizations

• Air China Cargo, ICAO airline designator CAO
• CA Oradea, Romanian football club
• CA Osasuna, Spanish football club
• Canadian Association of Optometrists
• Canadian Association of Orthodontists
• Central Allocation Office, cross border electricity transmission capacity auction office
• Central Applications Office, Irish organisation that oversees college applications
• Civil Aviation Office of Poland
• Iran Civil Aviation Organization
• Office of the Chief Administrative Officer of the United States House of Representatives
• Compliance Advisor/Ombudsman, accountability arm of the World Bank
• Council for Adult Education, later Centre for Adult Education, in Victoria, Australia
• Commission on Audit

Job titles

• Chief Academic Officer of a University, often titled the Provost
• Chief accounting officer of a company
• Chief administrative officer of a company
• Chief analytics officer of a company
• Compliance Advisor/Ombudsman, an independent office that reviews complaints

Names

• Cao (Chinese surname) (曹)
• Cao (Vietnamese surname)

People

• Cao (footballer, born 1968), Portuguese footballer
• Cao Cao (died 220), founder of Cao Wei, China
• Cao Hamburger (born 1962), Brazilian director, screenwriter and producer
• Cao Pi (c.187–226), emperor of Cao Wei, China
• Cao Yu (1910–1996), Chinese playwright
• Cao Yupeng (born 1990), Chinese snooker player
• Carlos Alberto Caó (1941–2018), Brazilian activist, lawyer, and politician
• Diogo Cão, a 15th-century Portuguese explorer
• Joseph Cao (born 1967), United States politician
• Lady of Cao, a Moche mummy, Peru
• Longbing Cao (born 1969), data scientist
• Pierre Cao (1937–2026), Luxembourgish composer and conductor

Places

• Cao (state), a Chinese vassal state of the Zhou Dynasty (1046 - 221 BCE)
• Cao County, Shandong, China
• Cao Wei, also called Wei, one of the regimes that competed for control of China during the Three Kingdoms period (220 - 280 CE)
• Magdalena de Cao, a town on the north coast of Peru, surrounded by major archaeological sites, c. 50km north of the city of Trujillo

Other uses

• Cao (bull), a legendary bull in Meitei mythology
• CaO, the chemical symbol for calcium oxide
• Cão!, an album by Portuguese band Ornatos Violeta
• CA Osasuna, a Spanish sport club
• a Child Arrangement Order under English family law
• Chlorophyllide-a oxygenase, an enzyme
• Cold air outbreak, an intense and/or prolonged cold weather wave of air
• Controller Access Object, as described in the ORiN robot interface