| MACO | Maryland Association of Counties | 马里兰州县协会 |
| MACO | Mars Atmospheric Constellation Observatory | 火星大气星座天文台 |
| MACO | Medallic Art Company | 金属艺术公司 |
| MACO | Management and Community Organization Concentration | 管理和社区组织集中 |
| MACO | Military Assault Command Operations (gaming) | 军事突击指挥作战（游戏） |
| MACO | Marshalling Area Control Officer | 待机地域控制官 |
| MACO | The Make A Change Organisation | Make A Change组织 |
| MACO | Military Assistance Counter Offensive | 军事援助反攻 |
| MACO | Multiple Agent Climbing Organism | 多代理攀爬生物 |