| Name | Phone | Category |
| Daily News | (650)391-1000 | Leaders Circle |
| Dang, Finley, Jurosky & Baldassari-Cruz | 650-328-6356 | Health Services |
| Jill Daniel- Pasta Queen PR. | 650-486-1159 | Marketing and Communications |
| Darbar Indian Cuisine | 650-321-6688 | Restaurants, Cafes & Catering |
| Days Inn Palo Alto | 650-493-4222 | Hotels & Motels |
| Deborah's Palm | 650-473-0664 | Community & Human Services |
| deLemos Properties | 650-493-3073 | Real Estate |
| Devcon Construction, Inc. | 408-942-8200 | Building |
| DGN Technologies, Inc. | 510-396-9972 | Business to Business Resources |
| Diane Morin-Law Offices -Family Law, Mediation & Collaboration Law | 650-473-0822 | Attorneys |
| Dinah's Garden Hotel | 650-493-2844 | Restaurants, Cafes & Catering |
| Doty Barlow Britt & Thieman LLP | 650-327-0100 | Attorneys |
| Downtown Streets Inc | 650-304-1174 | Community & Human Services |
| Draper Fisher Jurvetson | 650-233-9000 | Financial Services |
| Dreyfus Properties | 650-485-3476 | Real Estate |
| Dante Drummond of Alain Pinel | 650-400-9390 | Real Estate |
| Duxiana of Palo Alto | 650-322-7134 | Beds & Mattresses |
| Dworkin Insurance Services | 650-329-1330 | Insurance Services |
| Sunny and Dan Dykwel, Agents, Keller Williams | 650-400-6961 | Real Estate |
