- Hallmark Gift Shop, South Dennis
- Hamburger Restaurants, South Dennis
- Hardware Stores, South Dennis
- Hauling And Shipping, South Dennis
- Health & Fitness Program Consultants & Trainers, South Dennis
- Health & Medical, South Dennis
- Health And Medical Centers, South Dennis
- Health Care Information & Services, South Dennis
- Health Clubs & Gymnasiums, South Dennis
- Healthcare Providers, Practitioners & Professionals, South Dennis
- Hearing Aids & Assistive Devices & Supplies, South Dennis - Hearing Devices
- Heating & Air-Conditioning Contractors, South Dennis - HVAC Contractors - Installation, Repair, Replace Service, etc
- Heating & Plumbing Supplies Stores, South Dennis
- Heating Contractors, South Dennis - Heating Systems - Installation & Repair
- Highway Surfacing & Paving Contractors, South Dennis - Pavers - Paving Companies
- Home Additions & Remodeling Contractors, South Dennis - Refinishing & Restoration
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- Home Decor Stores, South Dennis - Home Decorations, Supplies & Accessories
- Home Electronics, South Dennis
- Home Furnishings, South Dennis - Home Decor Stores, Items & Accessories
- Home Health Care, South Dennis - Agencies & Services
- Home Improvements Referral Service, South Dennis
- Home Theaters, South Dennis
- Hospitals, South Dennis
- Hot Dog Restaurants, South Dennis
- Hot Tubs, Saunas, Whirlpools & Spas Supplies, Equipment & Accessories, South Dennis
- House & Apartment Cleaning, South Dennis
- House & Building Washing & Maintenance Exterior, South Dennis
- Household & Commercial Appliances Stores, South Dennis
- Household Goods & Furniture Storage , South Dennis
- Housing Authority, South Dennis
- Hunting & Fishing Equipment, Supplies & Services, South Dennis
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