| Buffalo Bayou PartnershipEIN 76-0183954 | Environment | TX | $5,366,711Mid-sized | 96.66 |
| Buffalo Bill Center of the WestEIN 83-0180403 | Arts, Culture, Humanities | WY | $12,651,943Mid-sized | 91.69 |
| Buffalo City MissionEIN 16-0743965 | Human Services | NY | $8,709,233Mid-sized | 78.72 |
| Buffalo Philharmonic OrchestraEIN 16-0755739 | Arts, Culture, Humanities | NY | $11,854,256Mid-sized | 75.15 |
| BUILD (Businesses United in Investing, Lending & Development)EIN 94-3386695 | Education | CA | $13,514,301Large | 82.94 |
| BUILD, Inc.EIN 23-7022085 | Human Services | IL | $2,698,597Small | 93.96 |
| Building ChangesEIN 91-1410450 | Human Services | WA | $6,478,654Mid-sized | 86.84 |
| Building Goodness FoundationEIN 54-1956136 | Community Development | VA | $2,098,192Small | 93.83 |
| Building Homes for HeroesEIN 20-4540852 | Human Services | NY | $11,604,904Mid-sized | 96.46 |
| buildOnEIN 22-3128648 | International | CT | $15,454,830Large | 93.73 |
| Burn InstituteEIN 23-7260718 | Health | CA | $1,287,313Small | 98.17 |
| Business Executives for National SecurityEIN 52-1271179 | Research and Public Policy | DC | $5,840,585Mid-sized | 91.72 |
| Business Volunteers UnlimitedEIN 34-1724581 | Community Development | OH | $2,178,270Small | 86.70 |
| Butler County United WayEIN 31-0734490 | Community Development | OH | $1,798,027Small | 80.83 |
| Butler Institute of American ArtEIN 34-0748495 | Arts, Culture, Humanities | OH | $2,888,969Small | 84.64 |
| Butte Humane SocietyEIN 94-1580621 | Animals | CA | $1,225,114Small | 70.07 |
| Buzzards Bay CoalitionEIN 04-2971978 | Environment | MA | $5,263,968Mid-sized | 91.87 |
| Byrd Hoffman Water Mill FoundationEIN 13-4144013 | Arts, Culture, Humanities | NY | $4,627,048Mid-sized | 89.85 |
| Byrnes Health Education CenterEIN 23-2588187 | Health | PA | $1,174,724Small | 86.43 |
| C-FAMEIN 13-3964076 | International | NY | $1,755,829Small | 70.05 |
| C.M. Russell MuseumEIN 81-6003526 | Arts, Culture, Humanities | MT | $3,813,246Mid-sized | 84.05 |
| C.S. Lewis InstituteEIN 54-1802015 | Religion | VA | $1,547,360Small | 81.32 |
| C5 Youth Foundation of GeorgiaEIN 26-2498817 | Education | GA | $1,102,127Small | 80.20 |
| Cabrini-Green Legal AidEIN 36-2775706 | Human and Civil Rights | IL | $2,242,229Small | 83.56 |
| Cadence InternationalEIN 84-6027655 | Religion | CO | $9,231,613Mid-sized | 87.68 |
| Cal Farley'sEIN 75-0808768 | Human Services | TX | $48,884,362Large | 84.04 |
| Cal Ripken, Sr. FoundationEIN 52-2310500 | Human Services | MD | $21,777,183Large | 90.45 |
| Calcutta Mercy MinistriesEIN 20-3432133 | International | GA | $1,666,566Small | 75.32 |
| CalderaEIN 94-3235649 | Human Services | OR | $2,644,552Small | 90.17 |
| California Academy of SciencesEIN 94-1156258 | Arts, Culture, Humanities | CA | $87,733,463Large | 82.64 |
| California Agricultural Leadership FoundationEIN 94-6069269 | Education | CA | $1,783,468Small | 83.42 |
| California Center for the Arts, EscondidoEIN 33-0646517 | Arts, Culture, Humanities | CA | $5,002,152Mid-sized | 73.11 |
| California Charter Schools AssociationEIN 51-0465703 | Education | CA | $24,280,771Large | 88.22 |
| California Community FoundationEIN 95-3510055 | Community Development | CA | $189,261,881Large | 91.24 |
| California Dental Association FoundationEIN 68-0411536 | Health | CA | $3,209,950Small | 86.79 |
| California Emergency FoodlinkEIN 68-0275330 | Human Services | CA | $41,035,733Large | 94.03 |
| California Film InstituteEIN 94-2498062 | Arts, Culture, Humanities | CA | $4,774,934Mid-sized | 77.25 |
| California Foundation on the Environment and the EconomyEIN 94-2579986 | Environment | CA | $1,638,401Small | 76.58 |
| California Highway Patrol 11-99 FoundationEIN 95-6530738 | Human Services | CA | $4,292,243Mid-sized | 81.31 |
| California Historical SocietyEIN 94-0385620 | Arts, Culture, Humanities | CA | $2,589,078Small | 81.81 |
| California Native Plant SocietyEIN 94-6116403 | Environment | CA | $2,326,445Small | 88.85 |
| California Pan-Ethnic Health NetworkEIN 94-3306223 | Human and Civil Rights | CA | $1,974,105Small | 92.22 |
| California Police Youth CharitiesEIN 30-0121107 | Human Services | CA | $1,565,382Small | 26.93 |
| California Science Center FoundationEIN 95-2210527 | Arts, Culture, Humanities | CA | $25,189,988Large | 83.85 |
| California Shakespeare TheaterEIN 51-0169452 | Arts, Culture, Humanities | CA | $5,640,851Mid-sized | 88.42 |
| California State Parks FoundationEIN 94-1707583 | Environment | CA | $8,274,117Mid-sized | 75.25 |
| California State Railroad Museum FoundationEIN 94-2698626 | Arts, Culture, Humanities | CA | $2,945,986Small | 93.91 |
| California TroutEIN 23-7097680 | Environment | CA | $5,896,349Mid-sized | 90.63 |
| California Waterfowl AssociationEIN 94-1149574 | Animals | CA | $10,714,120Mid-sized | 89.54 |
| California Wilderness CoalitionEIN 51-0183228 | Animals | CA | $626,639Small | 76.36 |
| California Youth ConnectionEIN 94-3141616 | Human Services | CA | $2,848,916Small | 78.22 |
| California-Hawaii Elks Major ProjectEIN 95-1919366 | Human Services | CA | $4,289,759Mid-sized | 87.55 |
| Californians for Population StabilizationEIN 94-2581509 | Research and Public Policy | CA | $1,049,754Small | 83.06 |
| Call to ActionEIN 36-3003308 | Religion | IL | $386,558Small | 77.69 |
| Calvary Children's HomeEIN 58-0976478 | Human Services | GA | $1,344,061Small | 83.27 |
| Calvary Women's ServicesEIN 52-1307706 | Human Services | DC | $2,076,427Small | 86.31 |
| Cambodian Children's FundEIN 20-0764162 | International | CA | $8,478,860Mid-sized | 91.16 |
| Cambridge in AmericaEIN 52-6071299 | Education | NY | $86,183,618Large | 92.02 |
| CAMC FoundationEIN 31-0887133 | Health | WV | $4,752,916Mid-sized | 87.52 |
| Camden City Garden ClubEIN 22-2870647 | Environment | NJ | $940,194Small | 73.72 |