- Machine Shop & Tool Repair Service, Marysville
- Machinery, Supplies & Equipment - Business Production Related, Marysville
- Machinery, Supplies & Equipment - Business Supplies Related, Marysville
- Machinery, Supplies & Equipment - Construction & Contractor Related, Marysville
- Mailing, Delivery & Courier Service, Marysville
- Malls & Shopping Centers, Marysville
- Management Consultants & Services, Marysville
- Manicurists & Pedicurists, Marysville
- Manufacturing, Marysville
- Manufacturing Products, Marysville
- Marine Products And Services, Marysville
- Marine Repair & Service Stations, Marysville
- Marine Supplies & Equipment, Marysville - Boat Supplies
- Marine Supplies & Equipment Repair, Marysville - Boat Supplies & Equipment
- Marriage & Family Counselors, Marysville
- Masonry Materials & Supplies, Marysville
- Massage Therapy, Marysville
- Medical Supplies & Equipment, Marysville
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- Mental Health Specialists, Marysville - Psychologist, Psychiatrist, Psychotherapist, etc
- Merchandising & Marketing Consultants, Marysville
- Merle Norman Cosmetics, Marysville
- Methodist Church, Marysville
- Mexican Restaurants, Marysville
- Mining, Marysville
- Miscellaneous Government, Marysville
- Miscellaneous Personal Services, Marysville
- Miscellaneous Photographers, Marysville
- Miscellaneous Professional, Marysville
- Mobile Home Parks & Communities , Marysville
- Mortgage Bankers & Correspondents, Marysville
- Motor Vehicle, Marysville
- Motor Vehicle Rental & Leasing, Marysville
- Moving Truck Rental , Marysville
- Mulch, Peat & Moss Products, Marysville
- Museums, Marysville
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