- Hair Care Professionals, West Boylston
- Hardware Stores, West Boylston
- Harness, Saddles & Supplies, West Boylston
- Health & Fitness Program Consultants & Trainers, West Boylston
- Health & Medical, West Boylston
- Health And Medical Centers, West Boylston
- Health Care Information & Services, West Boylston
- Health Clubs & Gymnasiums, West Boylston
- Healthcare Providers, Practitioners & Professionals, West Boylston
- Heating & Air-Conditioning Contractors, West Boylston - HVAC Contractors - Installation, Repair, Replace Service, etc
- Heating & Plumbing Supplies Stores, West Boylston
- Heating Contractors, West Boylston - Heating Systems - Installation & Repair
- Historical Organizations, West Boylston
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- Historical Societies, West Boylston
- Hobby & Model Shops & Supplies, West Boylston
- Holistic Health Practitioner, West Boylston - Holistic Medicine
- Home Additions & Remodeling Contractors, West Boylston - Refinishing & Restoration
- Home Decor Stores, West Boylston - Home Decorations, Supplies & Accessories
- Home Furnishings, West Boylston - Home Decor Stores, Items & Accessories
- Horseback Riding Lessons & Instruction, West Boylston - Horse Riding School
- Hospitals, West Boylston
- Hotels & Motels, West Boylston
- Housing Authority, West Boylston
- Hunting & Fishing Equipment, Supplies & Services, West Boylston
- Hydraulic Equipment & Supplies, West Boylston
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