| Acronym | Definition |
|---|
| MARCO➣Microelectronics Advanced Research Corporation |
| MARCO➣Maritime Consulting |
| MARCO➣Mayors and Regional Chairs of Ontario (Ontario, Canada) |
| MARCO➣Monitoring and Reporting Community Outcomes (New Zealand) |
| MARCO➣Multilevel Advanced Railways Conflict Resolution and Operation Control |
| MARCO➣Massachusetts Association of Community Rehabilitation Organizations, Inc. (formerly MARF) |