| Name | Deductibility Code |
| Access Institute of Research | -- |
| Advocates for Children | -- |
| Affiliate Chief Executives Council Inc. | -- |
| Africa Aid | -- |
| Aid for All Nations | -- |
| Alfred & Helen Myers Family Foundation | 4 |
| Alpha Beacon Christian Ministries | -- |
| Aragon Dons High School Foundation Inc. | -- |
| Aragon High School Music Boosters | -- |
| Aragon High School Ptso Inc. A California Npft Public Bnft Corp | -- |
| Armenian Rugs Society | -- |
| Armenian Summer Games Inc. | -- |
| Arthur C Zief Jr Foundation | 3 |
| Asian American Curriculum Project Inc. | -- |
| Assistance League of San Mateo County | -- |
| Atkinson Foundation | 4 |
| Autism Recovery Consortium | -- |
| Auxiliary Services of San Mateo Cou Nty Community College District | -- |
| Balance Food and Fun Inc. | -- |
| Bay Area Golf Consortium | -- |
| Bay Area Self Defense Association | -- |
| Bay Area Senior Services Inc. | -- |
| Blume Foundation | 4 |
| Bmoc Foundation | 4 |
| Bohannon Foundation | 4 |
| Bowles Hall Foundation | -- |
| Bowman Family Foundation | 4 |
| Bunker Hill Parents Participation Nursery School | -- |
| Burlingame-San Mateo Soroptimist Foundation Inc. | -- |
| Califa Group | -- |
| California Goldrush Softball Association | -- |
| California YMCA Youth & Government | -- |
| Caminar | -- |
| Caminar-Las Vegas | -- |
| Campus Evangelistic Fellowship | -- |
| Career Education Center | -- |
| Carl Rockwood Scholarship Fund | 4 |
| Center for Independence of the Disabled | -- |
| Center on Alcohol Drugs and Disability | 4 |
| Centro Chileno Lautaro | -- |
| Change of the Peninsula | -- |
| Charles and Ann Johnson Foundation | 4 |
| Chauncey F Lufkin III Foundation | 4 |
| Chi-Kwang Huo Education Foundation | 4 |
| Child Care Coordinating Council of San Mateo County Inc. | -- |
| Chinese Christian Church Music Institute | -- |
| Christian Family Fellowship | -- |
| Christians of the Evangelical Faith Pentecostal | -- |
| City Arts of San Mateo Inc. | -- |
| Clement Chen Family Foundation | 4 |
| Comunidad De Jesus Foundation | -- |
| Congregational Church of San Mateo | -- |
| Consumer Federation of California Education Fund | -- |
| Courtney Roberts Foundation | 4 |
| Coyote Point Museum Association | -- |
| Coyote Point Rifle & Pistol Club Inc. | -- |
| Crary Family Foundation | 4 |
| Creative Fellowship Church | -- |
| Crestmont Conservatory of Music | -- |
| Crystal Springs Patients Activities Committee Inc. | -- |
| Day School Foundation | -- |
| Dipo Youth Project | -- |
| Donata Young Foundation | 4 |
| Dukes and Duchesses Scholarship Fund | -- |
| Edwards Foundation Inc. | 4 |
| Ellipse Peninsula Aids Services | -- |
| Eric Roberts Foundation | 4 |
| Fallen Leaf Lake Homeowners Association | -- |
| Family Housing and Adult Resources Inc. | -- |
| Family Service Agency of San Mateo County Inc. | -- |
| Fear of Flying Clinic | -- |
| Festa Foundation | -- |
| Firefighters Toys for Tots Inc. | -- |
| First Samoan Christian Church in San Mateo | -- |
| Fix-It Foundation | 4 |
| G W Williams Foundation | 4 |
| Gate Parents Group of the San Mateo Union High School District | -- |
| Golden Gateway Library Network | -- |
| Grace Gospel Christian Church Rca | -- |
| Greater San Mateo Kiwanis Club Foundation | -- |
| Green Environmental Foundation | -- |
| Gym1 Boosters | -- |
| Gymnasts Families & Coaches Together | -- |
| Hari Om Shiri Raadha Krishna Mandir | -- |
| Hawkins Foundation | 4 |
| Head Start Auxiliary | -- |
| Heart and Soul | -- |
| Helping Hands for Animals | 4 |
| Hidden Flowers Aide to Battered Women | -- |
| Hillcrest Chaplancy and Ministries of San Mateo | -- |
| Hillsborough Auxiliary to the Fam Serv Agency of San Mateo County | -- |
| Hillsdale High School Athletic Boosers Club | -- |
| Hillsdale High School Foundation Inc. | -- |
| Hip Edgewater Isle Inc. | -- |
| Hip Housing Development Corporation | -- |
| Holocaust Oral History Project | -- |
| Homework Central | -- |
| Hope Preservation Inc. | -- |
| Hospital Consortium of San Mateo County | -- |
| Human Investment Project Inc. | -- |
| Institute for the Advanced Studies of Health | -- |
| Institute for the Study of Local Institutions | -- |
| Islamic Society of San Mateo | -- |
| J H Robbins Foundation | 4 |
| Jewishlinks Inc. | 4 |
| Junior Statesmen Foundation | -- |
| Kamtsang Yeshe Gatsal | -- |
| Kanting Charitable Foundation | 4 |
| Kinwood Mitchell Memorial Scholarship Foundation | -- |
| Kyros Ministry | -- |
| Latino Leadership Council of San Mateo County | 4 |
| Learning Resources | 5 |
| Legal Aid Society of San Mateo Co | -- |
| Leon A & Esther F Blum Foundation Inc. | -- |
| Living Word Chruch of the Deaf Incorporated | -- |
| Lyda-Rico Deluca Foundation Inc. | 4 |
| Manos Unidas Contigo Peru | -- |
| Maranatha Assembly of God of San Mateo | -- |
| Mark Roberts Foundation | 4 |
| Maskatiya Charities Inc. | -- |
| Masterworks Chorale Society | -- |
| Matthew Kelly Family Foundation | 4 |
| Medlend Org | 3 |
| Michael J Heiman Foundation | 4 |
| Microsurgical Transplantation Research Foundation | -- |
| Mid Peninsula Parish | -- |
| Mid-Peninsula Boys & Girls Club Foundation | -- |
| Mid-Peninsula Boys & Girls Club Inc. | -- |
| Midcoast Park Lands | -- |
| Miguitas De Amor | -- |
| Mindworksusa Inc. | -- |
| Minister the Independent Church of the Incarnation Inc. | -- |
| Mission Hospice of San Mateo County | -- |
| Montessori Parents Committee of Parkside Sch Inc. Claudia Kelly | -- |
| Myers Learning Center Inc. | -- |
| Nami San Mateo County | -- |
| National Association on Alcohol Drugs and Disability Inc. | -- |
| National Shared Housing Resource Center Inc. | -- |
| Neighbors Who Care and Assist | 4 |
| New Age Awareness Foundation | -- |
| New Community Mission Church | -- |
| New Life Mission Church of Silicon Valley | -- |
| No Limits Press Inc. | 4 |
| Norma Gist Peoples Free Child Development Program Inc. | -- |
| North Central Neighborhood Assn | -- |
| North Peninsula Mandarin School | -- |
| Northern California Branch of the International Dyslexia Association | -- |
| Odyssey School | -- |
| Ombudsman Services of San Mateo County Inc. | -- |
| One Hundred Club of San Mateo County Edwin Johnson | -- |
| Pacific Forest and Watershed Lands Stewardship Council | 4 |
| Patricia Mayberry Hobe Foundation | 4 |
| Peninsula Alano Club | -- |
| Peninsula Ballet Theatre | -- |
| Peninsula Christian Life Fellowship | -- |
| Peninsula Clergy Network | -- |
| Peninsula Conflict Resolution Center | -- |
| Peninsula Grace Notes | -- |
| Peninsula Humane Society & Spca | -- |
| Peninsula Orchid Society Inc. | -- |
| Peninsula Temple Beth El | -- |
| Persian American Society | -- |
| Piedemonte Charitable Tr 020497 | 4 |
| Pilgrim Organization Inc. | -- |
| Plasterers & Cement Masons Scholarship Foundation | -- |
| Project Ninety Foundation | -- |
| Project Ninety Inc. | -- |
| Pure Works Foundation | -- |
| Queens Bench Foundation | -- |
| Ragazzi Boys Chorus | -- |
| Rainforest2reef Inc. | -- |
| Rainforest2reef Inc. | -- |
| Raintree Initiative | -- |
| Raintree Initiative | -- |
| Raiser Foundation | 4 |
| Raiser Foundation | 4 |
| Research Institutions Support Organization Inc. | -- |
| Roberts Foundation | 4 |
| Rotary Haciendas Inc. | -- |
| Rotary Service Foundation of San Mateo Calif | -- |
| Rupert H Johnson Jr Foundation | 4 |
| Sage Parents Organizing Resources for Our Teams | -- |
| Samaritan House | -- |
| San Francisco Bay Area Reformed Evangelical Church | -- |
| San Francisco Bay Area Science Fair Inc. | -- |
| San Francisco Bay Task Force 94 | -- |
| San Francisco Icg 2008 | -- |
| San Mateo Arboretum Society Inc. | -- |
| San Mateo Baptist Temple | -- |
| San Mateo Charities Inc. | -- |
| San Mateo Children Museum Foundation Inc. | -- |
| San Mateo County Astronomical Society | -- |
| San Mateo County Colleges Educational Housing Corporation | -- |
| San Mateo County Community Colleges Foundation | -- |
| San Mateo County Expostion and Fair Association | -- |
| San Mateo County Fellowship Inc. | -- |
| San Mateo County Health Foundation | -- |
| San Mateo County Medical Association Community Service Foun | -- |
| San Mateo County Pharmacist Association Incorporated | -- |
| San Mateo County Realtors Foundation | -- |
| San Mateo Crta - Scholarship and Educational Foundation Inc. | -- |
| San Mateo Dance Association | -- |
| San Mateo Garden Center | -- |
| San Mateo High School Band Aides Inc. | -- |
| San Mateo High School Bearcat Parent & Teacher Organization | -- |
| San Mateo High School Drama | -- |
| San Mateo High School Foundation | -- |
| San Mateo Japanese Youth | -- |
| San Mateo Japanese-American Community Center | -- |
| San Mateo Lions Club | -- |
| San Mateo Master Marlins Inc. | -- |
| San Mateo Medical Center Volunteers | -- |
| San Mateo Parents Nursery School Inc. | -- |
| San Mateo Park School Foundation | -- |
| San Mateo Police Activities League | -- |
| San Mateo Pony-Colt Baseball League | -- |
| San Mateo Public Library Foundation | -- |
| San Mateo Soccer Club | -- |
| San Mateo Youth Basketball Association | -- |
| San Mateo Youth Foundation Inc. | -- |
| San Mateo Youth Softball Association | -- |
| Sanctua Incorporation | -- |
| Saranaloka Foundation | -- |
| Sath Sung Ramayan Mandali of San Mateo | -- |
| Scanlan Charitable Trust | 4 |
| Scottie Health Fund of the San Fran Cisco Bay Scottish Terrier Club | -- |
| Scottie Rescue Fund of the San Francisco Bay Scottish Terrier | -- |
| Second Chance Project | -- |
| Self Reliance Inc. | -- |
| Shaping Youth Inc. | -- |
| Shp Foundation | 4 |
| Siasi O Tonga | -- |
| Siebel America Fund Inc. | 4 |
| Siebel Scholars Foundation | 3 |
| Silicon Vally Software Technology Association | -- |
| Six Seconds | -- |
| Speramus Foundation | 4 |
| Sri Lanka Tsunami Recovery Inc. | -- |
| St. James African Methodist Episcopal Zion Church | -- |
| St. Johns Cemetry Graves Association | 6 |
| St. Johns Volunteers | -- |
| Stanbridge Academy | -- |
| Student Career Forum | -- |
| Sunrise Rotary Club of San Mateo Charitable Foundation | -- |
| Supporting Our Sons Inc. | -- |
| Sustainable San Mateo County | -- |
| Taulama for Tongans | -- |
| Tenrikyo San Mateo Church | -- |
| Tensho Kotau Jingu Kyo Northern California Division | -- |
| The Archaeo-Community Foundation | 4 |
| The Carey School | -- |
| The Center for Education Resources | -- |
| The Enlow Foundation | 4 |
| The George Feely Scholorship Foundation | -- |
| The George M and Adelaide M Keller Foundation | 4 |
| The Ginn Family Foundation | 4 |
| The High School of Commerce Alumni Association | -- |
| The Marvin and Nancy Dennis Family Foundation | 4 |
| The Raul A Tapia Family Foundation | 4 |
| The Sydney and Zelda Levin Family Foundation | 4 |
| The War Prevention Institute | 4 |
| Tongan Community Center | -- |
| Tv Academy Fund Inc. | -- |
| Tzu Hsiang Tao Yuan | -- |
| U P Alpha Sigma Alumni Association of North America Inc. | 4 |
| Unfolding Adventures for Women | -- |
| Unitarian Church of San Mateo | -- |
| Unofficial Peninsula Scholastic Chess League Inc. | -- |
| Valley Auxiliary to Family Service Agency of San Mateo County | -- |
| Venus Art Literature Foundation | 4 |
| Victory International Church | -- |
| Walden School | -- |
| Webguardian | -- |
| Westminster Education Foundation | -- |
| Westside Church of Christ | -- |
| William P Kyne Memorial Library | -- |
| Wiskmann Family Foundation | 4 |
| Wolfe Foundation | 4 |
| World of Veterans Inc. | -- |
| Yonghua Foundation | 4 |
| Yun Shi Jing She Inc. | -- |
| Zawaya | -- |