| Name | Deductibility Code |
| American Institute of Ethics | -- |
| Artiada Inc. - A Nonprofit Public Benefit Corp | -- |
| Aurora Communications International Inc. | -- |
| Bay Area Accordion Club | -- |
| Belmont San Mateo Babe Ruth Baseball League | -- |
| Belmont Youth Softball Association | -- |
| Belmont-Redwood Shores Pony Baseball | -- |
| Belmont-Redwood Shores Public School Foundation | -- |
| Bosnian-Hergezovinian USA Cultural Association | -- |
| Can Do Coalition | -- |
| Carlmont Academic Foundation | -- |
| Carlmont Parents Nursery School | -- |
| Center for New Beginnings Inc. | -- |
| Charles A Becker Foundation | -- |
| Charles Armstrong Parent Group | -- |
| Charles Armstrong School | -- |
| Chinese Latern Cultural Foundation | 4 |
| Cipriani After-School Care Inc. | -- |
| Clergy Family Care | -- |
| Counseling Works Services | -- |
| Diosdado L Ibabao Environment Fund Inc. | -- |
| Domini Hoskins Black History Museum & Learning Center | -- |
| Economic Vitality Education and Rsearch Foundation | -- |
| Fellowship Bible Church of San Mateo | -- |
| Fellowship of the Holy Cross | -- |
| Footsteps Missions | -- |
| Friends of the Belmont Library Incorporated | -- |
| Golden State Bonsai Federation Charitable Tr | -- |
| Greater Bay Area Indian Community | -- |
| Harvest Ministry | -- |
| Israel Longhorn Project | -- |
| Kollage Community School for the Arts | -- |
| Light to Asia | -- |
| Little Hands A Parent Child Center | -- |
| Lloyd Westley Luttrell Memorial Foundation for Alzheimers Research | 4 |
| Lynn Allyson Corston Trust | 4 |
| M & M Sports Inc. | -- |
| Marycliff Foundation | 4 |
| Nissen Family Charitable Trust | 4 |
| Notre Dame High School | -- |
| Oakland Helping Hand USA | -- |
| On My Way Inc. | -- |
| Pen Insula Art Museum | -- |
| Peninsula Agape Christian Church | -- |
| Peninsula Arts Council | -- |
| Peninsula Cantare A California Nonprofit Benefit Corporation | -- |
| Peninsula Gospel Builders Inc. | -- |
| Peninsula Gujarati Association | -- |
| Pied Piper Players Inc. | -- |
| Saint Gregoriose Orthodox Church of India | -- |
| San Andreas Youth Soccer Organization Inc. | -- |
| San Francisco Sheriffs Air Squadron | -- |
| San Juan Canyon Preservation Trust | -- |
| San Mateo County Family Day Care Association Inc. | -- |
| San Mateo Gymnastics Booster Club | -- |
| San Mateo Perinatal Council Inc. | -- |
| Schools for Humanity | -- |
| Springboard Forward | -- |
| St. Stanislaus Benevolent Society | -- |
| Taiwan Buddhism Fa Shing Pao Lin Association USA Branch | -- |
| Taiwanese American Foundation | -- |
| Taube Family Foundation | 4 |
| This Music Matters Ministries | -- |
| Tiny Heartbeats | -- |
| US - Japan Cultural Association Nichibei Bunka Koryuu Kyokai | -- |
| West Bay Nuggets Softball Association | -- |
| Yaseen Foundation | -- |