| Name | Phone | Category |
| Danenberg Designs | 650-325-2060 | Business Referral Network Members |
| Dang, Finley, Jurosky & Baldassari-Cruz | 650-328-6356 | Health Services |
| Darbar Indian Cuisine | 650-321-6688 | Restaurants, Cafes & Catering |
| DataSafe | 650-875-3800 | Computers and Electronics |
| David Brett Company Inc. | 650-364-0456 | Building |
| Days Inn Palo Alto | 650-493-4222 | Hotels & Motels |
| Deborah's Palm | 650-473-0664 | Community & Human Services |
| Nina Dees | 650 697-6045 | Signs & Banners |
| deLemos Properties | 650-793-1201 | Real Estate |
| Design Within Reach | 650-328-2700 | Furniture & Accessories |
| Designs By Theresa | 650-359-7650 | Business Referral Network Members |
| Devcon Construction, Inc. | 408-942-8200 | Building |
| Diamonds of Palo Alto | 650-322-1200 | Jewelers |
| Dinah's Garden Hotel & Trader Vic's Restaurant | 650-493-2844 | Restaurants, Cafes & Catering |
| Dolan Capital Management | 650-327-8100 | Financial Services |
| Doty Barlow Britt & Thomas LLP | 650-327-0100 | Attorneys |
| Douglas Ross Construction, Inc. | 650-470-4700 | Building |
| Downtown Grid | 650-704-3768 | |
| Downtown Streets Inc | 650-462-1795 | Community & Human Services |
| Draper Fisher Jurvetson | 650-233-9000 | Financial Services |
| Dreyfus Properties | 650-644-3474 | Real Estate |
| Dante Drummond of Coldwell Banker | 650-400-9390 | Real Estate |
| Duxiana of Palo Alto | 650-322-7134 | Beds & Mattresses |
| Dworkin Insurance Services | 650-329-1330 | Insurance Services |
| Dan Dykwel | 650-400-6961 | Real Estate |
