| Acronym | Definition |
|---|
| CDO | Collaboration Data Objects (Microsoft) |
| CDO | Collateralized Debt Obligation |
| CDO | Compagnia Delle Opere |
| CDO | Chief Development Officer (corporate title) |
| CDO | Commando |
| CDO | Chief District Officer (Nepal) |
| CDO | Central Dense Overcast (meteorology) |
| CDO | Command Duty Officer |
| CDO | Conseil des Ombres (French: Shadow Council; gaming) |
| CDO | Community Development Organization |
| CDO | Community Dial Office |
| CDO | Community Development Office |
| CDO | Centrale des Opticiens (French: Central Opticians) |
| CDO | Chromosome Deletion Outreach, Inc |
| CDO | Care Delivery Organization (healthcare) |
| CDO | Capital Defender Office |
| CDO | Centre de Danses Orientales (French: Oriental Dance Center) |
| CDO | Come da Oggetto (Italian: As Per Subject) |
| CDO | Clergy Deployment Office(r) |
| CDO | Central Dispatching Organization |
| CDO | Communications Duty Officer |
| CDO | Central Documentation Office |
| CDO | Civil Defense Office |
| CDO | Carbon Doped silicon Oxide |
| CDO | Child Development Officer |
| CDO | Central Disbursing Officer |
| CDO | Chicago District Office |
| CDO | Chief Disciplinary Officer (prisons) |
| CDO | Corneodermatoosseous Syndrome |
| CDO | Customer Direct Order |
| CDO | Commercial Development Office |
| CDO | Change Design Order |
| CDO | Construction Development/Design Office |
| CDO | Community Development Organizer |
| CDO | Constrained Distortion Optimal |
| CDO | Consent Dismissal Order (Canadian courts) |
| CDO | Change Data Order |
| CDO | Classified Documents Officer |
| CDO | Control Document Officer |
| CDO | Community Development Outline |
| CDO | Coaxial Digital Output |
| CDO | Controlling DoD (Department of Defense) Office |
| CDO | Callable Debt Obligation |
| CDO | Career Development Opportunities (various organizations) |
| CDO | Compulsive Disorder of Obsessiveness |