| MARC | MAchine Readable Cataloging 
| Others |
| MARC | MAchine-Readable Cataloguing
| Others |
| MARC | Madison Area Rehabilitation Centers
| Others |
| MARC | Mailing list ARChives
| Others |
| MARC | Main Battle Area
| Others |
| MARC | Maintenance and Repair Contract
| Others |
| MARC | MAnpower Requirements Criteria
| Others |
| MARC | Manually Adjusted Ride Control
| Others |
| MARC | Many Aliens Record Contract
| Others |
| MARC | Marcos
| Others |
| MARC | Marin Association Of Retarded Citizens
| Others |
| MARC | Marine Animal Rescue Coalition
| Others |
| MARC | Marion Animal Resource Connection
| Others |
| MARC | Marketing Authority Redefining Creativity
| Others |
| MARC | Marketing, Advertising, Research, and Communications
| Others |
| MARC | Marlon Arbela Restaurant Corporation
| Others |
| MARC | Maryland Area Rapid Commuter
| Others |
| MARC | Maryland Area Regional Commuter
| Others |
| MARC | Mast Antenna And Rotator Calculator
| Others |
| MARC | Mcmaster University Automotive Resource Centre
| Others |
| MARC | Meat Animal Research Center
| Others |
| MARC | Membership Application Review Committee
| Others |
| MARC | Men Advocating Real Change
| Others |
| MARC | Metropolitan Area Retard Commuters
| Others |
| MARC | Michigan Aeronautical Research Center
| Others |
| MARC | Mid Altitude Radial Convergence
| Others |
| MARC | Mid America Regional Council
| Others |
| MARC | Mid-America Regional Council
| Others |
| MARC | Mid-Atlantic Amateur Radio Club
| Others |
| MARC | Midwest Area River Coalition
| Others |
| MARC | Midwest Association for Race Cars
| Others |
| MARC | Migration Acquisition Retention And Capitalization
| Others |
| MARC | Milton Area Racing Circuit
| Others |
| MARC | Mindful Awareness Research Center
| Others |
| MARC | Minority Access to Research Careers
| Others |
| MARC | Minority Access To Research Centers
| Others |
| MARC | Missionary Athlete Recruitment Campaign
| Others |
| MARC | Missionary Aviation Repair Center
| Others |
| MARC | Moab Arts and Recreation Center
| Others |
| MARC | Mobile Amateur Radio Corps
| Others |
| MARC | Mobile Area Resource Centre
| Others |
| MARC | Model A Restorers Club
| Others |
| MARC | Modular Adaptive Robust Control
| Others |
| MARC | Monroe Association for ReMARCable Citizens
| Others |
| MARC | Monroe Association For Retarded Citizens
| Others |
| MARC | Multi-technology Automated Reader Card
| Others |
| MARC | Multiple Access Reservation Centre
| Others |
| MARC | Multiple Area Readout Computer
| Others |
| MARC | Musee Automobile Reims Champagne
| Others |
| MARC | Muti-technology Automated Reader Card
| Others |