| Name | Deductibility Code |
| A Frank Rothschild Fund | 4 |
| Aki Foundation | -- |
| Ambassadors Worldwide Inc. | -- |
| Americare Neurosurgery International | -- |
| Arjay R & Frances F Miller Foundation | 4 |
| Aware Today Inc. | -- |
| Barrett Environmental and Educational Foundation | 4 |
| Billionlights Foundation | -- |
| Bioe2e Inc. | -- |
| Californias Gold Rush Equestrian Drill Team | -- |
| Combined Training Equestrian Team Alliance Ltd. | -- |
| Davidow Family Foundation | 4 |
| Djerassi Resident Artists Program | -- |
| Edward E Hills Fund | 4 |
| Eltoukhy Family Foundation | 4 |
| Emmett R Quady Foundation | 4 |
| Exchange Scholar Foundation | -- |
| Face Aids | -- |
| Ferret Education Foundation | -- |
| Field Trip Foundation | -- |
| Filoli Center | -- |
| Friends of Huddart & Wunderlich Parks | -- |
| Friends of the Woodside Library | -- |
| Gifford Foundation | 4 |
| Good Sound Foundation | -- |
| Herzig Family Foundation | 4 |
| Hrh Foundation | 4 |
| Hrj Charities Inc. | -- |
| James F and Sarah T Fries Foundation | 4 |
| Keare - Hodge Family Foundation Inc. | 4 |
| Kings Mountain Children Center | -- |
| Kings Mountain Education Fund | -- |
| Kings Mountain Volunteer Fire Brigade Inc. | -- |
| Knights Leadership Fund | -- |
| Knightsbridge Castle Foundation for Financial Crime Research Programs | -- |
| Life Sciences Society | -- |
| Listwin Family Foundation | 4 |
| Liz Parks-Novitsky Memorial Scholarship Fund | 4 |
| Markkula Foundation | 4 |
| Mary Henry Foundation | 4 |
| Melmon Family Foundation | 4 |
| Mounted Patrol of San Mateo County Foundation | -- |
| National Center for Equine Facilitated Therapy | -- |
| Northern California Bulldog Rescue Inc. | -- |
| Northern California Dx Foundation Inc. | 4 |
| Organization of Biological Field Stations Inc. | -- |
| Peace Builders | -- |
| Peninsula Macrobiotic Community | -- |
| Project Hear | -- |
| Rattie Ratz | -- |
| Refugee Relief International Incorporation | -- |
| Rotary Club of Woodside-Portola Valley Foundation Inc. | -- |
| Sally E Dean Performing Arts Inc. | -- |
| Sand Hill Challenge | -- |
| Saw Island Foundation Inc. | 4 |
| Scott D Cook Signe Ostby Charitable Foundation | 4 |
| Star Hill Academy | -- |
| Thank You Dad Foundation | 4 |
| The Gessow Family Foundation | 4 |
| The Muller Foundation | 4 |
| Wilhelm Furtwangler Society of America | -- |
| Woodside Aed Foundation | -- |
| Woodside Community Foundation | -- |
| Woodside High School Foundation | -- |
| Woodside Junior Riders | -- |
| Woodside Parents Nursery School | -- |
| Woodside School Foundation | -- |
| Zen Heart Sangha Inc. | -- |