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| G. Earl Real Estate | Oshkosh |
| Galaxy Technologies | Madison |
| Gammex RMI | Middleton |
| Gaskets, Inc. | Rio |
| Gaslights.com | Three Lakes |
| Gauthier Law Group | Mequon |
| The Gecko Group Inc. | Milwaukee |
| Gehl Co | West Bend |
| Generac Portable Products LLC | Jefferson |
| Generac Power Systems Inc. | Waukesha |
| General Communications | Madison |
| General Electric Co | |
| General Heating and Air Conditioning | Madison |
| Genesis Enterprise Center | Madison |
| Gerald Nell Inc. | Waukesha |
| G-I Office Technologies | Madison |
| Gialamas Company, Inc. | Madison |
| Giddings & Lewis, LLC | Fond Du Lac |
| Giesler Group, Inc. | Green Bay |
| Gilbert & Nash Co., Inc. | Kaukauna |
| Gilbert Paper Co. | Appleton |
| Gilman Engineering & Mfg. Co. LLC | Janesville |
| Glavinsured Agency, Inc. | Necedah |
| Global Dialog Internet | Monona |
| Global Printer Services | Madison |
| Global Systems Management | West Allis |
| Global Technology Systems | Trevor |
| Go Bay View LLC | Milwaukee |
| Godfrey & Kahn | Milwaukee |
| Goeman’s Wood Products, Inc. | Hartford |
| Goff’s Enterprises, Inc. | Pewaukee |
| Gordon Aluminum Industries, Inc. | Schofield |
| Gordon Flesch Company, Inc. | Madison |
| Gorman and Company, Inc. | Madison |
| Graef, Anhalt, Schloemer & Associates, Inc. | Milwaukee |
| Graham Transmissions, Inc. | Menomonee |
| Granberg’s Concoctions Unlimited | |
| Grant Thornton LLP | Appleton |
| Graphics Systems | Menomonee Falls |
| Grayline Inc. | Waukesha |
| Great Lakes Friction Products, Inc. | Milwaukee |
| Great Lakes Education Loan Services, Inc. | Madison |
| Great Northern Corp. (GNC) | Appleton |
| The Grede Company | |
| Green Bay Packaging, Inc. | Green Bay |
| Green Lake Local Arts Gallery | Green Lake |
| Green Valley Media | Milwaukee |
| Green Web Design | |
| Greenbriar & Russel | Madison |
| Greene-Niesen Insurance Agency, Inc. | Middleton |
| Greenheck | Schofield |
| Greyhound Bus Lines | |
| Grob, Inc. | Grafton |
| Gross Automation | New Berlin |
| Gruber Communications | Oak Creek |
| Grunau Co. Inc. | Oak Creek |
| Gtech Corp | West Greenwich |
| GuestBridge, Inc. | Milwaukee |
| Guhring, Inc. | Brookfield |
| Gunter Advertising | Madison |
H
| Habush, Habush, & Rottier, Attorneys at Law | Milwaukee |
| Hagen Information Technologies, Inc. | Watertown |
| Halquist Stone Company | Sussex |
| Hamlin, Inc. | Lake Mills |
| Hammond Company | |
| Handi-Man Marine | Sussex |
| Handishop Industries Inc. | Tomah |
| Hankscraft Motors, Inc. | Reedsburg |
| Hansen Web Design | Madison |
| Hansen, Chr., BioSystems, A Div. Of Chr. Hansen Holding A/S | Milwaukee |
| Hanson & Associates | Madison |
| Hanson Machine, Inc | Spooner |
| Harken | Pewaukee |
| Harley-Davidson Inc | Milwaukee |
| Harvard Corporation | Evansville |
| HBG e-Business Solutions | Madison |
| Headquarters.Com Inc | Hartland |
| Heartland Credit Union | Madison |
| |
| Heartland Payment Systems | Waunakee |
| HeatStakers, Inc. | Madison |
| Hedland Flow Meters | Racine |
| The Heindel Group, Inc. | Madison |
| Heinrich Accounting | Milwaukee |
| HellermannTyton | Milwaukee |
| Helwig Carbon Products, Inc. | Milwaukee |
| Heritage Real Estate | |
| Herzing College | Madison |
| Hickory Ridge, Ltd. | Soldiers Grove |
| The Hiebing Group | Madison |
| Hilgy’s LP Gas | Phillips |
| Hire Staffing, Inc. | Madison |
| Hi-techniques, Inc. | Madison |
| HM Graphics | Milwaukee |
| Home Environment | Madison |
| Home Savings Bank | Madison |
| The Howard Company Inc. | Brookfield |
| HRS, Inc | Greenfield |
| Hubbell Special Products, Inc. | Bristol |
| Hufcor, Inc. | Janesville |
| Hunter Business Group | Milwaukee |
| Husco International Inc. | Waukesha |
| Hydra-Tool | Manitowoc |
| Hydraulic Service & Manufacturing Inc. (HSM) | Menomonee Falls |
| Hyperion Sudios, Inc. | Madison |
