| MAP |
Market Access Program | Risk Mapping, Assessment and Planning (changed to Risk MAP) | Museum Assessment Program |
| MAPP |
Modeling, Analysis, Predictions, and Projections (older link archive; archive2; archive3) |
| MAPS |
Mapping and Analysis for Public Safety (unable to verify 10/19) | Mass Attacks in Public Spaces | Mobile Applications for Public Safety (unable to verify 10/23; older link archive; archive2; archive3) | Monitoring Avian Productivity and Survivorship |
| MARAD |
Maritime Administration (older link archive) |
| MARC |
Machine-Readable Cataloging |
| MARI |
Minority HIV/AIDS Research Initiative (unable to verify 6/22) |
| MARINe |
Multi-Agency Rocky Intertidal Network (older link archive) |
| MARSSIM |
Multi-Agency Radiation Survey and Site Investigation Manual |
| MARTS |
Advance Monthly Retail Trade Survey |
| MARVEL |
Machine Assisted Realization of the Virtual Electronic Library |
| MAS |
Multiple Award Schedule (older link archive; archive2; archive3) |
| MASCD |
Mission Assurance Standards and Capabilities Division |
| mase |
Model-Assisted Survey Estimation |
| MASS |
Management Assessment Subsystem |
| MAST |
Marriage Strengthening Research and Dissemination Center | Mission Accountability Support Tracker |
| MAT |
Medication-Assisted Treatment (unable to verify 1/23) |
| MATCH |
Medications at Transitions and Clinical Handoffs (older link archive) | Metadata Access Tool for Climate and Health (discontinued 6/18; older link archive) |
| MATERIAL |
Machine Translation for English Retrieval of Information in Any Language |
| MATES |
Multi-Agency Tissue Engineering Science (unable to verify 2/16) |
| MATRIX |
Multi-State Anti-Terrorism Information Exchange (.pdf) |
| MATS |
Mercury and Air Toxics Standards |
| MAUDE |
Manufacturer and User Facility Device Experience |
| MAVEN |
Mars Atmosphere and Volatile EvolutioN (older link archive) |
