| M&C | Maintenance And Checkout 
| Others |
| M&C | Meet and Confer
| Others |
| M&C | Milk and Cream
| Others |
| M&C | Monitor and Control
| Others |
| M&C | Monitor and Control panel
| Others |
| M+C | Medicare+Choice
| Others |
| M.C. | Military Cross (British)
| Others |
| MC | M Care
| Others |
| MC | Ma City
| Others |
| MC | Macerata (Provence)
| Others |
| MC | Macro Correct
| Others |
| MC | Mad Cashier
| Others |
| MC | Mad Catz
| Others |
| MC | Mad Cow
| Others |
| MC | Madison Central
| Others |
| MC | Magic Cancellation
| Others |
| MC | Magnetic Coil
| Others |
| MC | MagnoCube (a cube of magnets)
| Others |
| MC | Mail Center
| Others |
| MC | Mail Client
| Others |
| MC | Mail Code
| Others |
| MC | Main Campus
| Others |
| MC | Main Category
| Others |
| MC | Main Chain
| Others |
| MC | Main Channel
| Others |
| MC | Main Character
| Others |
| MC | Main Cross-connect
| Others |
| MC | Maine Coast Railroad Corporation
| Others |
| MC | Mains Connector
| Others |
| MC | Maintenance Console
| Others |
| MC | Maintenance Cost
| Others |
| MC | Major Carry
| Others |
| MC | Major Case
| Others |
| MC | Majulah Connection
| Others |
| MC | Makanan Cepat
| Others |
| MC | Make Call
| Others |
| MC | Make Closure
| Others |
| MC | Maki Compiler
| Others |
| MC | Makin Cash
| Others |
| MC | Malaria Consortium
| Others |
| MC | Male Caller
| Others |
| MC | Malir Colony, Karachi, Pakistan
| Others |
| MC | Managed Care
| Others |
| MC | Maneuver Control
| Others |
| MC | Mansfield Cooper
| Others |
| MC | Manual Chapter (NRC Inspection Manual)
| Others |
| MC | Manual Compression
| Others |
| MC | Manufactured Concrete
| Others |
| MC | Map Comment
| Others |
| MC | Maple Creek
| Others |
| MC | Marathon Concept
| Others |
| MC | Marathon County
| Others |
| MC | Marginal Cost
| Others |
| MC | Mariah Carey
| Others |
| MC | Marietta College
| Others |
| MC | Marijuana Cultivation
| Others |
| MC | Marine Commercial
| Others |
| MC | Marine Corps
| Others |
| MC | Maritime Commission
| Others |
| MC | Marketing Cost
| Others |
| MC | Markov Chain
| Others |
| MC | Marque de Commerce
| Others |
| MC | Marriage Certificate
| Others |
| MC | Mars Crosser
| Others |
| MC | Marvin Center
| Others |
| MC | Mary Christina
| Others |
| MC | Mary Clare
| Others |
| MC | Maserati Corsa
| Others |
| MC | Maserati Corse
| Others |
| MC | Mass Casualties
| Others |
| MC | Mast Cell
| Others |
| MC | Mast Cells
| Others |
| MC | Master Card
| Others |
| MC | Master Charge (now called MasterCard)
| Others |
| MC | Master Chief
| Others |
| MC | Master Class
| Others |
| MC | Master Copier
| Others |
| MC | Master Copy
| Others |
| MC | Master of Ceremonies
| Others |
| MC | Master of Ceremony
| Others |
| MC | Master Of Cleverness
| Others |
| MC | Mastered The Craft
| Others |
| MC | Masters of Counselling
| Others |
| MC | Math Center
| Others |
| MC | Matt and Chris
| Others |
| MC | Matter Compiler
| Others |
| MC | Maxi Cassette
| Others |
| MC | Maximum Concentration
| Others |
| MC | Maximum Correction
| Others |
| MC | McCoy
| Others |
| MC | McLaren Complex
| Others |
| MC | mean in Construction
| Others |
| MC | Measurement and Control
| Others |
| MC | Mechanical Comprehension
| Others |
| MC | Mechanical Contractor
| Others |
| MC | Medal Ceremony
| Others |
| MC | Media Card
| Others |
| MC | Medical Care
| Others |
| MC | Medical category
| Others |
| MC | Medical Centre
| Others |
| MC | Medical Certificate
| Others |
| MC | Medical College
| Others |
| MC | Medical Corp
| Others |
| MC | Medical Corps
| Others |
| MC | Medicines Commission
| Others |
| MC | Medium Contrast
| Others |
| MC | Medullary Carcinoma
| Others |
| MC | Medullary Cavity
| Others |
| MC | MegaCycles (superseded by megahertz)
| Others |
| MC | Member of Congress
| Others |
| MC | Memorandum of Conversation
| Others |
| MC | Memory Card
| Others |
| MC | Memory Clear
| Others |
| MC | Memory Configuration
| Others |
| MC | Men's Club
| Others |
| MC | meningococcal
| Others |
| MC | Mens' Club
| Others |
| MC | Menstrual Cycle
| Others |
| MC | Mentally Challenged
| Others |
| MC | Merciless Creations
| Others |
| MC | Mercuric Chloride
| Others |
| MC | Merkel cell
| Others |
| MC | Merry Christmas
| Others |
| MC | Mesangial Cell
| Others |
| MC | Mesothelial Cell
| Others |
| MC | Message Center
| Others |
| MC | Messiah Complex
| Others |
| MC | metacarpal
| Others |
| MC | Meteorological Codes
| Others |
| MC | Meter Coupled
| Others |
| MC | Mexico City
| Others |
| MC | Mic Controller
| Others |
| MC | Michael Cat
| Others |
| MC | Michael Cooper
| Others |
| MC | Michigan Central Railroad (Massachusetts Coastal Railroad)
| Others |
| MC | Micro Cassette
| Others |
| MC | Micro Ceramic
| Others |
| MC | Micro Compact
| Others |
| MC | microcalcification
| Others |
| MC | microcirculation
| Others |
| MC | Microphone Commando
| Others |
| MC | Microphone Controller
| Others |
| MC | Microsoft Certified
| Others |
| MC | Microtubule Centre
| Others |
| MC | Midcourse Correction Maneuver
| Others |
| MC | Middle Carbonate
| Others |
| MC | Middle Center
| Others |
| MC | Middle Class
| Others |
| MC | Middlebury College
| Others |
| MC | Midnight Club
| Others |
| MC | Midnight Commander
| Others |
| MC | Mike Curb
| Others |
| MC | Military Claimant
| Others |
| MC | Military Colleges
| Others |
| MC | Military Committee
| Others |
| MC | Military Community
| Others |
| MC | Military Cross
| Others |
| mC | Millicoulombs
| Others |
| MC | Min Cut
| Others |
| MC | Mind Control
| Others |
| MC | Mindless Crap
| Others |
| MC | Mine Craft
| Others |
| MC | MineCraft
| Others |
| MC | mineralocorticoid
| Others |
| MC | Mini C
| Others |
| MC | Mini Cutout
| Others |
| MC | Mini Cutouts
| Others |
| MC | Miniature Clearance
| Others |
| MC | Minimal Change
| Others |
| MC | Minimally Competent
| Others |
| MC | Ministerio de Comercio
| Others |
| MC | Ministerio de Cultura
| Others |
| MC | minocycline
| Others |
| MC | Minor Change
| Others |
| MC | Minor Clergy
| Others |
| MC | Minority Community
| Others |
| MC | Mint Condition
| Others |
| MC | Mint Craft
| Others |
| MC | Mirror Cooler
| Others |
| MC | Mission Capability
| Others |
| MC | Mission Capable
| Others |
| MC | Mission Completion
| Others |
| MC | Mission Computer
| Others |
| MC | Mission Critical
| Others |
| MC | Mission-Capable
| Others |
| MC | Missionaries Of Charity
| Others |
| MC | Mississippi College
| Others |
| MC | Mistress of Chaos
| Others |
| MC | mitochondria
| Others |
| MC | mitomycin C
| Others |
| MC | Mitotic Count
| Others |
| MC | Mitral Commissurotomy
| Others |
| MC | Mixed Cellularity
| Others |
| MC | Mixed Cryoglobulinaemia
| Others |
| MC | Mixing Creator
| Others |
| MC | Mobile Companion
| Others |
| MC | Mobilization Component
| Others |
| MC | moderator
| Others |
| MC | Modular Computing
| Others |
| MC | Moisture Content
| Others |
| MC | Molluscum Contagiosum
| Others |
| MC | Molten Carbonate
| Others |
| MC | Molten Core (World of Warcraft)
| Others |
| MC | Monaco
| Others |
| MC | Money and Cards
| Others |
| MC | Monmouth College
| Others |
| MC | Mononuclear Cell
| Others |
| MC | Monster Cat
| Others |
| MC | Montgomery College
| Others |
| MC | Mood Commander
| Others |
| MC | Morale Check
| Others |
| MC | Mordor's Children
| Others |
| MC | More Components
| Others |
| MC | Morning Cleaning
| Others |
| MC | Morris County
| Others |
| MC | Mortising Chisel
| Others |
| Mc | Moscovium
| Others |
| MC | Motel Cat
| Others |
| MC | Mother Cat
| Others |
| MC | Motion Control
| Others |
| MC | Motivate the Crowd
| Others |
| MC | Motley Crue
| Others |
| MC | Motocross
| Others |
| MC | Motor Car
| Others |
| MC | Motor Carrier
| Others |
| MC | Motor City
| Others |
| MC | Motor Coach
| Others |
| MC | Motor Controller
| Others |
| MC | Motor Cortex
| Others |
| MC | Motorcycle
| Others |
| MC | Motorcycle Club
| Others |
| MC | Motorcycle Combat
| Others |
| MC | Mountain Crest
| Others |
| MC | Move the Crowd
| Others |
| MC | Moved Centerline
| Others |
| MC | Movement Control
| Others |
| MC | Movie Clip
| Others |
| MC | Movimiento Comunista
| Others |
| MC | Moving Coil
| Others |
| MC | Moving Cylinder
| Others |
| MC | Mr Chan
| Others |
| MC | Mrs Clause
| Others |
| MC | Mucinous Carcinoma
| Others |
| MC | mucocutaneous
| Others |
| MC | Muddy Children
| Others |
| MC | Muhlenberg College
| Others |
| MC | Multi Channel
| Others |
| MC | Multi Coat
| Others |
| MC | Multi Coated
| Others |
| MC | Multi Computer
| Others |
| MC | Multi Conformer
| Others |
| MC | Multi-Channel
| Others |
| MC | multicell
| Others |
| MC | Multifunction Compensator
| Others |
| MC | Multilayer Coating
| Others |
| MC | Multimedia Card
| Others |
| MC | Multimedia Content
| Others |
| MC | Multiple Choice
| Others |
| MC | Multiple-Choice
| Others |
| MC | Multipoint Controller
| Others |
| MC | Municipal Corporation
| Others |
| MC | Muscle Car
| Others |
| MC | Muscle Contraction
| Others |
| MC | Music Cards
| Others |
| MC | Music Cinema
| Others |
| MC | Music Composer
| Others |
| MC | Music Coordinator
| Others |
| MC | Music Country
| Others |
| MC | Mutual Conductance
| Others |
| MC | Muya Clearly
| Others |
| MC | Muzeul Cristian
| Others |
| MC | My Cat
| Others |
| MC | My Computer
| Others |
| MC | Myoepithelial Cell
| Others |
| MC | Mysterious Circumstance
| Others |
| MC | Mystery Car
| Others |
| MC | Mystic Crystals
| Others |
| MC | Myxobolus Cerebralis
| Others |
| MC$ | Magic Xchange package (Magic Cap file archive)
| Others |
| MC- | Minecraft Bug
| Others |