| Name | Phone | Category |
| Pacific Art League of Palo Alto | 650-321-3891 | Art Galleries |
| Pacific Graduate School of Psychology | 650-421-4848 | Education |
| Palo Alto Art Center Foundation | 650-329-2366 | Museums |
| Palo Alto Bimmer, Inc. | 650-325-3818 | Automotive |
| Palo Alto Business Park | 650-967-2000 | Building |
| Palo Alto Chamber of Commerce | 650-324-3121 | Business to Business Resources |
| Palo Alto Commons | 650-494-0760 | Retirement Communities |
| Palo Alto Community Child Care | 650-493-2361 | Child Care |
| Palo Alto Community Federal Credit Union | 650-329-8900 | Banks & Credit Unions |
| Palo Alto Community Fund | 650-687-5026 | Community & Human Services |
| Palo Alto Dental Group | 650-323-1381 | Health Services |
| Palo Alto Downtown Business and Professional Association | 650-223-4334 | Associations, Clubs & Organizations |
| Palo Alto Eyeworks | 650-327-5665 | Health Services |
| Palo Alto Family YMCA | 650 856-9622 | Fitness |
| Palo Alto Glass | 650-494-7000 | Glass Services |
| Palo Alto Hills Golf & Country Club | 650-948-1800 | Golf Courses |
| Palo Alto Historical Association | 650-326-3355 | Community & Government |
| Palo Alto Host Lions Club | 650-326-1013 | Associations, Clubs & Organizations |
| Palo Alto Housing Corporation | 650-321-9709 | Community & Human Services |
| Palo Alto Jazz Alliance | | Music |
| Palo Alto Library Foundation | | Community & Human Services |
| Palo Alto Medical Foundation | 650-321-4121 | Leaders Circle |
| Palo Alto Office Center | 650-322-2592 | Real Estate |
| Palo Alto Partners in Education | 650-329-3990 | Community & Human Services |
| Palo Alto Prof. Firefighters Local # 1319 | 650-964-7084 | Community & Government |
| Palo Alto Recreation Foundation | 650-463-4900 | Community & Human Services |
| Palo Alto Research Center | (650) 812-4000 | Technology |
| Palo Alto Sanitation Company | 650-493-4894 | Community & Government |
| Palo Alto Staffing Services | 650-493-0223 | Staffing Services |
| Palo Alto Unified School District | 650-329-3700 | Education |
| Palo Alto Weekly | 650-326-8210 | Leaders Circle |
| Palo Alto Women's Club | 650-321-5821 | Event Planning & Management |
| Panache Catering | 650-967-7000 | Restaurants, Cafes & Catering |
| Pappas, Stephen R. Esq. | 650-858-8411 | Attorneys |
| Park Village Apartments | 650-856-1977 | Real Estate |
| Parrot AT & T | 650-324-2300 | Wireless Phones |
| Pathways Home Health, Hospice and Private Duty | 408-730-5100 | Health Services |
| Peninsula Beauty Supply Inc | 650-348-1454 | Beauty Salons & Services |
| Peninsula Creamery | 650-323-3175 | Restaurants, Cafes & Catering |
| Peninsula Open Space Trust (POST) | 650-854-7696 | Associations, Clubs & Organizations |
| Peninsula Optical Co. | 650-326-8415 | Health Services |
| Peninsula Volunteers, Inc. | 650-326-0665 | Community & Human Services |
| Peter B. Diaz, CPA, Tax Consulting | 650-400-2539 | Accounting & Bookkeeping Services |
| Peters, Peters & Ellingson | 650-328-6770 | Attorneys |
| Peterson Architects | 650-327-1161 | Architects |
| Piazza's Fine Foods | 650-363-7140 | Grocers & Markets |
| Pierce & Shearer LLP | 650-842-8480 | Attorneys |
| Pillsbury Winthrop Shaw Pittman LLP | 650-233-4500 | Attorneys |
| Pizza My Heart | 408-395-2111 | Restaurants, Cafes & Catering |
| Plastic Foodsource Packaging Group | 916-448-2581 | Associations, Clubs & Organizations |
| Plaza International | 650-493-8577 | Cleaning Services |
| Premier Properties | 650-325-7787 | Real Estate |
| Bruce Pressman | 650-857-0333 | |
| The Private Bank of the Peninsula | 650-843-2265 | Banks & Credit Unions |
| Private Professional Fiduciary | 650-324-2261 | Financial Services |
| Professional Scientific Services | 650-853-1050 | Business to Business Resources |
| Provident Credit Union | 1-800-632-4600 | Business Referral Network Members |
