COO

COO, coo, or Coo may refer to:

• Chief operating officer, a high-ranking corporate officer of an organization
• Certificate of origin, used in international trade
• Concept of operations, used in Systems Engineering Management Process
• Country of origin, a representative to the country or countries of manufacture, production, design, or brand origin where an article or product comes from

• Cell of origin (telecommunications)
• "Coo", the call of pigeons and doves
• "Coo", or "cooing", a type of human baby vocalization

• Coo Coo Cal (Calvin Bellamy; born 1970), an American rapper
• Coo Coo Marlin (1932–2005), a racing driver
• Clara Oswin Oswald, a fictional character

• Carboxylate, a type of anion
• Cobalt(II) oxide, a chemical with formula of CoO

• Coo, the former Italian name for the Dodecanese island Kos, now in Greece, off the coast of Turkey
• Calgary Olympic Oval, a Canadian ice rink
• Cadjehoun Airport, Cotonou, Benin (IATA code: COO)
• Cookham railway station, Berkshire, England (National Rail code: COO)

• Daihatsu Coo, a 2006–2012 Japanese subcompact hatchback
• Tōi Umi kara Kita Coo, a 1998 Japanese novel and anime film
• Summer Days with Coo, a 2007 Japanese animated film
• Coo, a scotticism for a cow
• Comox language (ISO 639-3 code: coo)
• The Cooper Companies, an American medical device company (Nasdaq ticker symbol: COO)

• All pages with titles beginning with COO
• All pages with titles containing COO