- Magazine Printing & Publishing, Kentfield
- Mailing, Delivery & Courier Service, Kentfield
- Management Consultants & Services, Kentfield
- Manicurists & Pedicurists, Kentfield
- Manufacturing, Kentfield
- Marriage & Family Counselors, Kentfield
- Massage Therapists & Professional, Kentfield
- Massage Therapy, Kentfield
- Meat Market, Wholesale & Products, Kentfield
- Medical Supplies & Equipment, Kentfield
- Mental Health Specialists, Kentfield - Psychologist, Psychiatrist, Psychotherapist, etc
- Merchandising & Marketing Consultants, Kentfield
- Mini & Self Storage, Kentfield
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- Miscellaneous Household Item Repair, Kentfield
- Miscellaneous Business Services, Kentfield
- Miscellaneous Government, Kentfield
- Miscellaneous Manufacturing, Kentfield
- Miscellaneous Personal Services, Kentfield
- Miscellaneous Professional, Kentfield
- Mortgage Companies, Kentfield
- Motor Vehicle, Kentfield
- Moving Companies, Kentfield
- Music, Kentfield
- Music Distribution, Kentfield
- Musical Instruments & Equipment Stores, Kentfield
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