Companies catalogue
- HAYHOE Mark, New Tecumseth
- HUSKY, Barrie
- HUSKY, Midhurst
- Hachey Auto Salvage & Repair Ltd, Bon Accord
- Hakim Optical Bradford, Bradford West Gwillimbury
- Hakim Optical Newmarket Yonge, Newmarket
- Halibut House Fish & Chips, Aurora
- Hall's Auto & Truck Parts, Fort Saskatchewan
- Harris' Farm, Springwater
- Harvey's, Innisfil
- Harvey's, Bradford West Gwillimbury
- Heart 2 Heart First Aid CPR Training Barrie, Barrie
- Heart 2 Heart First Aid CPR Training Newmarket, Newmarket
- Heart 2 Heart First Aid CPR Training Orillia, Orillia
- Heart and Stroke Foundation (York South Office), Aurora
- Heather Bovard, Mortgage Broker, Innisfil
- Heinz Burger Co., Barrie
- Heritage Hill Organics, Shanty Bay
- Highview Farms, Waubaushene
- Hillcrest Farms, New Tecumseth
- Hillcrest Public School, Barrie
- Holland Transformer Station, Newmarket
- Holly Meadows Elementary School, Barrie
- HomequityFunding.ca, Barrie
- Homestead Garden Growers, Georgina
- Honarary Slovakian Consulate, Newmarket
- Honeywell, Morris Plains
- Horodynsky Farms, Innisfil
- Hosta Fever, Barrie
- Hume Street Dental Care, Collingwood
- Huronia Land Conservancy, Midland
- Huronia Museum and Huron Ouendat Village, Midland
- Huronia Stallions Football Club, Orillia
- Huronia Urgent Care Clinic, Barrie
- Huronwoods RV Service, Barrie
- Husky, New Tecumseth
- Husky Travel Center, Bradford West Gwillimbury
- Hydro One Networks Inc, Barrie
- Hydroxyl Environmental - ODOROX® Toronto, Aurora