COO

COO may refer to:

• Country of origin
• Certificate of origin, used in international trade
• Chief operating officer or chief operations officer, high ranking corporate official
• Cell of origin (telecommunications)
• Carboxylate, type of anion
• Cobalt(II) oxide, chemical with formula of CoO.
• Cadjehoun Airport (IATA Code: COO), in Cotonou, Benin
• Calgary Olympic Oval, Canadian ice rink
• coo, the call of pigeons
• Summer Days with Coo, a 2007 Japanese animated film
• CoO Cost of Ownership