| MACCS | Magnetometer Array for Cusp and Cleft Studies 
| Others |
| MACCS | Marine Air Command and Control System
| Others |
| MACCS | Marine Air Command Control System
| Others |
| MACCS | Media Arts Collaborative Charter School
| Others |
| MACCS | MELCOR Accident Consequence Code System
| Others |
| MACCS | MELCOR Accident Consequence Code Systems
| Others |
| MACCS | Mid Atlantic Capital Cardiology Symposium
| Others |
| MACCS | Mobile Access to Converged Communications System
| Others |
| MACCS | Modeling Autonomy and Control in Complex Systems
| Others |
| MACCS | Modeling Autonomy and Control of ComplEx System
| Others |
| MACCS | Muhammad Ali Center Council of Students
| Others |