| Acronym | Definition |
|---|
| MARC | Marcato (music, in a marked manner, emphasized) |
| MARC | Meat Animal Research Center (USDA) |
| MARC | Machine Readable Cataloging |
| MARC | Minority Access to Research Careers |
| MARC | Mid America Regional Council (Leavenworth County Sheriff) |
| MARC | Model A Restorers Club |
| MARC | Machine Readable Cataloging Records |
| MARC | Maryland Rail Commuter service |
| MARC | Multi-technology Automated Reader Card |
| MARC | Montreal Amateur Radio Club (Canada) |
| MARC | Montgomery Amateur Radio Club (Montgomery County, Maryland) |
| MARC | McKinney Amateur Radio Club (North Texas) |
| MARC | Mid-Altitude Radial Convergence |
| MARC | Manpower Requirements Criteria |
| MARC | Maintenance and Repair Contract |
| MARC | Motorola Amateur Radio Club |
| MARC | Mid-America Remote Sensing Center (Murray State University) |
| MARC | Minimum Annual Revenue Commitment |
| MARC | Massachusetts Avian Records Committee |
| MARC | Micronesian Area Research Center, University of Guam |
| MARC | Mississauga Amateur Radio Club (Ontario, Canada) |
| MARC | Multiple Award Remediation Contract |
| MARC | Meadville Area Recreation Complex |
| MARC | Mining and Reclamation Council |
| MARC | Missing Air Crew Report (US military; WWII) |
| MARC | Minimum Acceptable Recovery Configuration |
| MARC | Meal, Alternative Regionally Customized |
| MARC | Methodology for Art Reproduction in Color |
| MARC | Mission Advanced Research and Communications Center |
| MARC | Marin Amateur Radio Club (San Rafael, CA) |
| MARC | Mankato Area Radio Club |
| MARC | Mobility Air Reporting and Communications (shelter) |
| MARC | Massachusetts Association for Retarded Children |
| MARC | Maryland Association for Retarded Citizens |
| MARC | Multi-Automated Reader Card |
| MARC | Multi-Access Relay Channel |
| MARC | Manpower Allocation Requirements Criteria |
| MARC | Material Acquisition Review Committee |
| MARC | Middle Atmosphere Responses to Change |
| MARC | Mobile Air Reporting Center |
| MARC | Motorola Australian Research Center |
| MARC | Matruh Adaptive Research Center |
| MARC | Materiel Acquisition Review Council |
| MARC | Material Accountability/Recoverability Code |
| MARC | MAC ALCE Reaction Communications (phased out in 1992) |
| MARC | Major Account Response Center |
| MARC | Music Artist Recognition Choice (Awards; UK) |
| MARC | Minneapolis Association of Retarded Children |