CMAO
| Acronym | Definition |
|---|---|
| CMAO | Central Mine Action Office (est. 1994; UN) |
| CMAO | Contract Management Assistance Officer (NASA) |
| CMAO | Court-Martial Appointing Order |
| CMAO | Consejo Mundial de Artes Y Oficios (Spanish: World Council of Arts and Crafts) |
| CMAO | Country Music Association of Ontario (Canada) |
| CMAO | Caudal Medial Accessory Olive |
| CMAO | Calculated Maximum Acid Output |