MCA
- Adam Yauch
- Chris Avellone
- Conversation analysis
- Depository Institutions Deregulation and Monetary Control Act
- HAL AMCA
- Japan Electronics and Information Technology Industries Association
- MC Alger
- MCA Inc.
- MCA Music Inc. (Philippines)
- MCA Nashville Records
- MCA Records
- MacConkey agar
- Macenta Airport
- Machine Check Architecture
- Maharashtra Chess Association
- Maharashtra Cricket Association
- Maharashtra Cricket Association Stadium
- Maká language
- Malaysian Chinese Association
- Manitoba Curling Association
- Margaret Court Arena
- Marist College Ashgrove
- Maritime and Coastguard Agency
- Mars-crossing asteroid
- Master of Computer Applications
- Maubeuge Construction Automobile
- Maximum credible accident
- McIntosh County Academy
- Mecheda railway station
- Medal Collectors of America
- Medicines and Healthcare products Regulatory Agency
- Memphis College of Art
- Mental Capacity Act 2005
- Merchant cash advance
- Metabolic control analysis
- Metal Construction Association
- Methyl cyanoacrylate
- Methylcholanthrene
- Metro College Alliance
- Metropolitan Church Association
- Michiel van den Bos
- Micro Channel architecture
- Microsoft Certified Architect
- Middle Class Abbayi
- Middle cerebral artery
- Military Commissions Act of 2006
- Millennium Challenge Account
- Minerals Council of Australia
- Minimum crossing altitude
- Ministry of Civil Aviation (United Kingdom)
- Ministry of Corporate Affairs
- Minnesota Comprehensive Assessments—Series II
- Mitsubishi MCA
- Monochloroacetic acid
- Morrison Christian Academy
- Motor Bus Society
- MotorCoach Australia
- Movable cellular automaton
- Multichannel analyzer
- Multicore Association
- Multiple correspondence analysis
- Mumbai Cricket Association
- Museum of Contemporary Art (disambiguation)
- Music Corporation of America
- Music Council of Australia
- PMI Colleges
- Universal Pictures Home Entertainment