| Caribbean Christian Centre for the DeafEIN 76-0763234 | International | MI | $1,358,173Small | 77.83 |
| Caring for CambodiaEIN 20-3645945 | Education | TX | $1,075,111Small | 87.81 |
| CARITASEIN 54-1441917 | Human Services | VA | $3,295,879Small | 92.44 |
| Carmel FoundationEIN 94-1225368 | Human Services | CA | $2,544,823Small | 82.50 |
| Carolina for KiberaEIN 56-2248495 | International | NC | $688,361Small | 90.05 |
| Carolina Raptor CenterEIN 56-1349170 | Animals | NC | $1,346,881Small | 87.96 |
| Carpenter's ShelterEIN 54-1571849 | Human Services | VA | $2,133,586Small | 88.40 |
| CARPLSEIN 36-3863573 | Human and Civil Rights | IL | $2,056,206Small | 90.17 |
| Carriage Town MinistriesEIN 38-1443378 | Human Services | MI | $2,568,726Small | 92.72 |
| Carson Scholars FundEIN 52-1851346 | Education | MD | $1,967,187Small | 90.00 |
| Cary Christian CenterEIN 64-0781589 | Human Services | MS | $914,934Small | 78.36 |
| Casa De AmigosEIN 75-1240087 | Human Services | TX | $995,709Small | 88.72 |
| CASA of the Pikes Peak RegionEIN 84-1115548 | Human Services | CO | $2,121,059Small | 90.78 |
| Casa TeresaEIN 95-3251986 | Human Services | CA | $2,588,883Small | 82.72 |
| Casas Por CristoEIN 74-2679881 | International | TX | $3,458,456Small | 82.51 |
| Casita MariaEIN 13-1623994 | Human Services | NY | $3,239,288Small | 88.21 |
| Casting for RecoveryEIN 03-0354382 | Health | MT | $1,529,836Small | 97.72 |
| Castleton Ranch Horse Rescue Inc.EIN 11-3731839 | Animals | CA | $1,611,503Small | 78.53 |
| Cat Adoption TeamEIN 20-0773189 | Animals | OR | $1,840,044Small | 89.24 |
| Cat Care SocietyEIN 84-0869447 | Animals | CO | $1,009,674Small | 91.82 |
| CATCH Neighborhood HousingEIN 02-0433505 | Community Development | NH | $1,696,293Small | 88.23 |
| Catch-A-Dream FoundationEIN 20-0487728 | Health | MS | $873,893Small | 84.60 |
| Cathedral Arts ProjectEIN 59-3672453 | Human Services | FL | $1,546,620Small | 88.36 |
| Catholic Big Sisters & Big BrothersEIN 13-5564115 | Human Services | NY | $1,235,856Small | 87.63 |
| Catholic Charities of Southern MinnesotaEIN 41-0721636 | Human Services | MN | $2,840,617Small | 93.42 |
| Catholic Charities, Diocese of NorwichEIN 06-0646609 | Human Services | CT | $2,105,175Small | 80.10 |
| Catholic Foundation of MaineEIN 77-0612679 | Religion | ME | $1,303,373Small | 75.35 |
| Catholic League for Religious and Civil RightsEIN 23-7279981 | Human and Civil Rights | NY | $3,045,051Small | 77.40 |
| Catholics for ChoiceEIN 52-1154418 | Human and Civil Rights | DC | $3,487,440Small | 93.10 |
| Catholics United for the FaithEIN 13-2621966 | Religion | OH | $125,191Small | 59.24 |
| Catskill Animal SanctuaryEIN 14-1827972 | Animals | NY | $2,104,076Small | 96.35 |
| CBMC InternationalEIN 58-1744271 | Religion | AZ | $580,511Small | 79.83 |
| CEC ArtsLinkEIN 13-2531695 | International | NY | $724,948Small | 82.05 |
| CEC/Seabee Historical FoundationEIN 58-1998577 | Arts, Culture, Humanities | MS | $1,608,841Small | 65.63 |
| Cedar Valley Habitat for HumanityEIN 42-1320296 | Community Development | IA | $2,697,820Small | 90.08 |
| Cedar Valley United WayEIN 42-0801846 | Community Development | IA | $2,470,131Small | 88.50 |
| Celebrity Fight Night FoundationEIN 86-0903119 | Health | AZ | $2,720,093Small | 74.05 |
| Cell Phones For SoldiersEIN 20-1343425 | Human Services | MA | $559,483Small | 66.97 |
| Center for Arizona PolicyEIN 86-0618922 | Human and Civil Rights | AZ | $1,965,515Small | 88.30 |
| Center for Arms Control and Non-ProliferationEIN 04-2693322 | Human and Civil Rights | DC | $905,915Small | 85.56 |
| Center for Arts EducationEIN 13-3938080 | Education | NY | $2,749,501Small | 81.74 |
| Center for Arts-Inspired LearningEIN 34-1241756 | Education | OH | $1,786,799Small | 83.36 |
| Center for Asian American MediaEIN 94-2801493 | Arts, Culture, Humanities | CA | $2,713,551Small | 90.39 |
| Center for Bio-Ethical ReformEIN 33-0443975 | Human and Civil Rights | CA | $982,157Small | 78.77 |
| Center for Child & Family ServicesEIN 54-0505893 | Human Services | VA | $1,647,899Small | 89.18 |
| Center for Children & Youth JusticeEIN 20-4457248 | Human and Civil Rights | WA | $2,216,576Small | 81.11 |
| Center for Children and FamiliesEIN 73-0933253 | Human Services | OK | $2,145,359Small | 92.65 |
| Center for Creative EducationEIN 65-0594599 | Education | FL | $1,588,290Small | 98.23 |
| Center for Creative Land RecyclingEIN 94-3302410 | Environment | CA | $984,006Small | 89.40 |
| Center for Development ServicesEIN 57-0988275 | Human Services | SC | $1,406,021Small | 93.01 |
| Center for EcoliteracyEIN 94-2911417 | Environment | CA | $2,386,398Small | 88.26 |
| Center for Economic and Policy ResearchEIN 52-2204029 | Research and Public Policy | DC | $1,990,467Small | 89.08 |
| Center for Economic ProgressEIN 36-3693728 | Human Services | IL | $3,171,304Small | 77.27 |
| Center for Education ReformEIN 52-1847187 | Education | DC | $2,366,966Small | 88.69 |
| Center for Energy Efficiency and Renewable TechnologiesEIN 68-0260751 | Environment | CA | $2,329,330Small | 81.32 |
| Center for Excellence in EducationEIN 52-1256563 | Education | VA | $2,698,931Small | 94.97 |
| Center for Great ApesEIN 65-0444725 | Animals | FL | $1,635,911Small | 95.55 |
| Center for Great Neighborhoods of CovingtonEIN 61-0733046 | Community Development | KY | $1,454,120Small | 83.91 |
| Center for Health and Gender EquityEIN 31-1794048 | Human and Civil Rights | DC | $1,685,998Small | 92.22 |
| Center for Houstons FutureEIN 76-0386539 | Community Development | TX | $958,264Small | 66.35 |