MCN
- Compact Disc subcode
- MCN (journal)
- Machynlleth railway station
- Melbourne Centre for Nanofabrication
- Microcomputer Club Nederland
- Middle Georgia Regional Airport
- Military Counseling Network
- Motor Cycle News
- Motorcycle Consumer News
- Mountain Corps Norway
- Multi-channel network
- Multinational Corps Northeast
- Muscogee (Creek) Nation
- Museum Computer Network
- Music Center the Netherlands
- Pancreatic mucinous cystic neoplasm