- Machine Shop & Tool Repair Service, Johnstown
- Machinery, Supplies & Equipment - Business Production Related, Johnstown
- Machinery, Supplies & Equipment - Business Supplies Related, Johnstown
- Machinery, Supplies & Equipment - Construction & Contractor Related, Johnstown
- Management Consultants & Services, Johnstown
- Manicurists & Pedicurists, Johnstown
- Manufacturing, Johnstown
- Manufacturing Products, Johnstown
- Martial Arts & Self Defense Schools, Johnstown
- Masonry Materials & Supplies, Johnstown
- Massage Therapists & Professional, Johnstown
- Massage Therapy, Johnstown
- Metal Finishers, Johnstown
- Metal Plating & Polishing, Johnstown
|
- Metal Products, Johnstown
- Methodist Church, Johnstown
- Mini & Self Storage, Johnstown
- Miscellaneous Business Product Repair, Johnstown
- Miscellaneous Government, Johnstown
- Miscellaneous Industry, Johnstown
- Miscellaneous Personal Services, Johnstown
- Miscellaneous Professional, Johnstown
- Motor Vehicle, Johnstown
- Motor Vehicle Rental & Leasing, Johnstown
- Motorcycle Parts, Accessories & Dealers, Johnstown
- Moving Truck Rental , Johnstown
- Muffler Shop & Exhaust Systems, Johnstown
- Musical Instruments Repair, Sales & Service, Johnstown
|
