MTC
- Coordinated Mars Time
- MIDI timecode
- MTS (telecommunications)
- Mackay Transit Coaches
- Major trauma centre
- Management and Training Corporation
- Mandarin Training Center
- Manhattan Theatre Club
- Manila Tytana Colleges
- Manitoba Theatre Centre
- Marion Technical College
- Mastery Transcript Consortium
- McLaren Technology Centre
- Mechanised Transport Corps
- Medullary thyroid cancer
- Meerut City railway station
- Melbourne Theatre Company
- Metro Transit (Minnesota)
- Metropolitan Transit Commission (disambiguation)
- Metropolitan Transition Center
- Metropolitan Transport Corporation (Chennai)
- Metropolitan Transportation Commission (San Francisco Bay Area)
- Međimurska trikotaža Čakovec
- Mill test report (metals industry)
- Ministry of Transport and Communications (Venezuela)
- Missionary Training Center
- Mississippi Teacher Corps
- Mitcham Eastfields railway station
- Mobile Telecommunications Company
- Mobile Telecommunications Limited
- Modular tensor category
- Mongolia Telecom Company
- Montreal Transit Corporation
- Morgan Technical Ceramics
- Multistate Tax Commission
- S3RL
- Whirlwind I