- Machinery, Supplies & Equipment - Business Production Related, Colleyville
- Machinery, Supplies & Equipment - Business Supplies Related, Colleyville
- Machinery, Supplies & Equipment - Construction & Contractor Related, Colleyville
- Mailing, Delivery & Courier Service, Colleyville
- Major Appliances, Colleyville - Household & Kitchen
- Make Up & Cosmetics Application, Colleyville
- Management Consultants & Services, Colleyville
- Manicurists & Pedicurists, Colleyville
- Manufacturers Agents & Representatives, Colleyville
- Manufacturers Representative, Colleyville - Reps, Independent Sales Representative, Sales Agent, etc
- Manufacturing, Colleyville
- Manufacturing Products, Colleyville
- Marriage & Family Counselors, Colleyville
- Martial Arts & Self Defense Schools, Colleyville
- Mary Kay Cosmetics, Colleyville
- Massage Therapists & Professional, Colleyville
- Massage Therapy, Colleyville
- Massage Therapy Relaxation, Colleyville
- Medical Groups & Clinics, Colleyville - Medical & Health Centers
- Medical Supplies & Equipment, Colleyville
- Meeting & Event Planning Services, Colleyville - Conference Consultants
- Membership Sports & Recreation Clubs, Colleyville
- Mental Health Specialists, Colleyville - Psychologist, Psychiatrist, Psychotherapist, etc
- Merle Norman Cosmetics, Colleyville
- Methodist Church, Colleyville
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- Mexican Food, Colleyville
- Mexican Restaurants, Colleyville
- Mind-Body Massage, Colleyville
- Ministries Church, Colleyville
- Miscellaneous Household Item Repair, Colleyville
- Miscellaneous Business Services, Colleyville
- Miscellaneous Government, Colleyville
- Miscellaneous Manufacturing, Colleyville
- Miscellaneous Personal Services, Colleyville
- Miscellaneous Photographers, Colleyville
- Miscellaneous Professional, Colleyville
- Mopeds, Scooter & Mini-Bikes Parts, Accessories & Dealers, Colleyville
- Mortgage Bankers & Correspondents, Colleyville
- Mortgage Brokers, Colleyville
- Mortgage Companies, Colleyville
- Mortgages & Loans, Colleyville
- Motion Picture Pre & Post Production Services, Colleyville
- Motor Vehicle, Colleyville
- Motor Vehicle Rental & Leasing, Colleyville
- Motorcycle Parts, Accessories & Dealers, Colleyville
- Motorized Bicycle, Colleyville
- Movie Theaters, Colleyville
- Moving Companies, Colleyville
- Moving Truck Rental , Colleyville
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