CLO

• Chief Learning Officer, training post
• Chief Legal Officer of a legal department

• Alfonso Bonilla Aragón International Airport, Palmira, Colombia, IATA code
• Civic Light Opera (disambiguation), several US theatres
• Cło, Świętokrzyskie Voivodeship, Gmina Kazimierza Wielka, Kazimierza County, Poland
• Coolaroo railway station, Melbourne

• Central Legal Office of NHS Scotland
• Conselh de la Lenga Occitana (Occitan Language Council)
• Cooperative Living Organization, a housing cooperative in Gainesville, FL, US
• Federation of Civil Service Organizations (Centrale van Landsdienaren Organisaties), Suriname

• Collateralized loan obligation, an asset-backed security
• Color Light Output or color brightness of a projector

• Alberto Clò (born 1947), Italian politician and academic
• Clodovil Hernandes (1937–2009), Brazilian fashion designer, TV presenter and politician nicknamed Clô

• Campylobacter-like organism test, rapid test for the most common cause of gastric ulcer
• Chlorine monoxide, a chemical radical
• Clo the Cow, advertising mascot of Clover Stornetta Farms
• Hypochlorite ion (ClO⁻), composed of chlorine and oxygen
• Unit of clothing insulation

• Cee Lo

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