- Machine Shop & Tool Repair Service, Newton
- Machinery, Supplies & Equipment - Business Production Related, Newton
- Machinery, Supplies & Equipment - Business Supplies Related, Newton
- Machinery, Supplies & Equipment - Construction & Contractor Related, Newton
- Maintenance, Cleaning & Sanitation, Newton
- Major Appliances, Newton - Household & Kitchen
- Management Consultants & Services, Newton
- Manicurists & Pedicurists, Newton
- Manufacturers Agents & Representatives, Newton
- Manufacturing, Newton
- Manufacturing Equipment & Supplies, Newton
- Marriage & Family Counselors, Newton
- Martial Arts & Self Defense Schools, Newton
- Masonry Contractors, Newton - Stone Mason, Brick Mason - Install & Repair
- Massage Therapists & Professional, Newton
- Massage Therapy, Newton
- Meat Market, Wholesale & Products, Newton
- Medical & Health Service Organizations, Newton
- Medical Diagnostic Clinics, Newton - Clinical Labs & Centers
- Medical Supplies & Equipment, Newton
- Meeting & Event Planning Services, Newton - Conference Consultants
- Membership Sports & Recreation Clubs, Newton
- Men's Clothing Stores, Newton - Clothes & Accessories
- Mental Health Specialists, Newton - Psychologist, Psychiatrist, Psychotherapist, etc
- Merchandise Sales Events, Newton
- Metal Repair Service & Blacksmith, Newton - Iron Works
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- Metropolitan Church, Newton
- Micro Breweries, Newton
- Mildew Removal & Control, Newton - Mold Removal
- Mini & Self Storage, Newton
- Ministries Church, Newton
- Miscellaneous Business Product Repair, Newton
- Miscellaneous Household Item Repair, Newton
- Miscellaneous Business Services, Newton
- Miscellaneous Government, Newton
- Miscellaneous Manufacturing, Newton
- Miscellaneous Personal Services, Newton
- Miscellaneous Professional, Newton
- Money Brokers, Newton
- Mortgage Bankers & Correspondents, Newton
- Motion Picture & Television Production Services, Newton
- Motion Picture Pre & Post Production Services, Newton
- Motion Pictures Video Tape Duplication & Transfer Services, Newton
- Motor Vehicle, Newton
- Moving Companies, Newton
- Muffler Shop & Exhaust Systems, Newton
- Murals & Faux Finish Walls, Newton
- Music, Newton
- Music Production Services, Newton
- Musical Instruments Repair, Sales & Service, Newton
- Musical Recording Services, Newton
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