| Link | Galileo Technology | Miami | Florida | | 1 | $4,800,000 | |
| Link | Gateway Associates | St. Louis | Missouri | Inflabloc Pharmaceuticals | | | |
| Link | GATX Ventures | Lafayette | California | IBAHN | | | Communications Information Services |
| Link | Gazelle Investments | Salt Lake City | | mediaFORGE, NetVision, Inc | 1 | | Software Services |
| Link | GE Capital | | | HemaMetrics, Inc. | 1 | $7,500,000 | |
| Link | General Motors Investment Management Co. | New York | New Mexico | Campus Pipeline | 1 | $4,510,000 | Information Services Electronics Software Energy |
| Link | Generations Partners | | | Icrossing | 1 | | |
| Link | Global Catalyst Partners | Redwood Shores | California | SliceX | 1 | $5,000,000 | Communications Electronics Software |
 | GMG Capital | New York | | Forum Systems | 3 | $12,080,000 | Communications Electronics Security |
| Link | Golden Pine Ventures | Durham | North Carolina | | | | |
| Link | Goldman Sachs Group | | | | | | Communications Content & Media Information Services Electronics Software Services Energy |
| Link | Granite Capital | | | Sandlot Corporation (formerly ZZ Soft) | 1 | | |
| Link | Granite Ventures | San Francisco | California | Campus Pipeline, Ingenix, Inc. | | | Communications Content & Media Electronics Software Energy Research |
| Link | Great Hill Partners | | | Neumont University | 1 | | Information Services Services |
 | Grow Utah Ventures | Kaysville | | Elemental Business, Revinetix, TecServ, Inc. | 1 | | Information Services Electronics Software |
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