Companies catalogue
- G & H Appliance And Refrigeration Service, Woodstock
- G & J Used Cars, Komoka
- G & M Sportswear, Hagersville
- G K York Management, Brantford
- GCP Industrial Products, Kitchener
- GKYork, Brantford
- GNC - General Nutrition Centres, Hamilton
- GNC - General Nutrition Centres, Cambridge
- GNC - General Nutrition Centres, Hamilton
- GNC - General Nutrition Centres, Hamilton
- GT Wig Wardobe, London
- Gaddzilla Teas, Waterford
- Galerie Lumiere, Brantford
- Gameday Games, Hamilton
- Games Exchange, Kitchener
- Gateway Property Management, Delta
- Gateway Property Management Corporation, Delta
- Gatto Law Offices, Hamilton
- Gemini Remodelling, London
- George's Small Engine Repair&Service, Hamilton
- Georgia's Health & Beauty Spa, Brantford
- Geoware Inc., Waterloo
- Geoware Inc., Waterloo
- Germiphene Corporation, Brantford
- Gerry's Roofing & Siding, Hamilton
- Get Pumped Septic Services Inc., Waterdown
- GewTV Cell Phone Repairs iPhone Unlock Guelph Computer PC Mac, Guelph
- Giant Carpet Flooring Centre, Barrie
- Giant Tiger, Hamilton
- Gibson's No Frills, Cambridge
- Gilligan's Skate Shop, Burlington
- Gimis Tile, Hamilton
- Ginge, London
- Gizeh Packaging Inc., Brantford
- Glam Inc, Hagersville
- Glanborough Pumping, Hamilton
- Glanbrook Stairs & Woodworking Ltd., Hamilton
- Glassford Chrysler, Ingersoll
- Glen Martin, Barrie
- Glendale Tirecraft Ancaster, Hamilton
- Global Laser, Woodstock
- Global Pet Foods, Cambridge
- Global Pet Foods, Hamilton
- Global Pet Foods, Hamilton
- Global Pet Foods, Kitchener
- Global Pet Foods, Hamilton
- Global Pet Foods, Hamilton
- Global Pet Foods, Hamilton
- Globo Shoes, Hamilton
- GoVirtual Assistant, London
- Goldline Mobility & Conversions, London
- Golf Town, Hamilton
- Good Luck Variety, Brantford
- Good Time Games, Waterloo
- Good Year Select, Brantford
- Goodies Thrift Book Store & Goodwill Donation Centre, Hamilton
- Goodwill's Used Cars, Aylmer
- Goodwin Tool and Machine, Brantford
- Goodyear, Hamilton
- Goodyear, Hamilton
- Gord's Plumbing, Ayr
- Gordon Flooring, Barrie
- GotDirtyWindows.ca, Barrie
- Governor's Variety, Hamilton
- Grace Motors, Delaware
- Grand Bend Flyboard, London
- Grand Pharmacy / Remedy'Rx, Cambridge
- Grand River Aqua Massage, Brantford
- Grand River Auto, Hamilton
- Grand River Cycle, Cambridge
- Grand River Property Management, Brantford
- Grand River Tool & Machine, Kitchener
- Grant Thornton LLP, Hamilton
- Greater Bay Transport Systems, Hamilton
- Green Earth, Cambridge
- Green Earth, Kitchener
- Green Earth, Burlington
- Green Liner Produce, Guelph
- Green Pools, Brant
- GreenVacs, Brant
- Greenhawk Campbellville, Milton
- Greenhawk Equestrian Sport, Burlington
- Greenhawk Harness and Equestrian Supplies, Cambridge
- Greenhorizons Sod Farms Previously called Compact Sod, Cambridge
- Greens Vegetarian Restaurant, London
- Grelin Apparel Graphics, Brantford
- Greyhound Bus, Brantford
- Grip The Edge, London
- Groware, Kitchener
- Grundy Telcom Integration, Burlington
- Guaranty Plumbing Co, Hamilton
- Guardian Discount Pharmacy, Brantford
- Guelph Solar, Guelph
- Guelph Tribune (The), Guelph
- Guiry Travel, Ancaster
- Gurney Sand & Gravel, Brant
- Guy's Vac Shop, Simcoe
- Guy's Vac Shop, Tillsonburg
- Guys Vac Shop, Woodstock
- Guzowski Wanda Broker of Peak Realty Ltd, Kitchener