| Catholic Charities AtlantaEIN 58-1097003 | Human Services | GA | $5,894,054Mid-sized | 86.38 |
| Catholic Charities CYO, Archdiocese of San FranciscoEIN 94-1498472 | Community Development | CA | $39,675,865Large | 91.21 |
| Catholic Charities Diocese of ClevelandEIN 34-1318541 | Human Services | OH | $94,796,377Large | 86.67 |
| Catholic Charities Diocese of St. PetersburgEIN 59-0875805 | Human Services | FL | $14,146,994Large | 90.63 |
| Catholic Charities Fort WorthEIN 75-0808769 | Human Services | TX | $36,791,584Large | 97.23 |
| Catholic Charities of BaltimoreEIN 52-0591538 | Human Services | MD | $110,847,148Large | 87.17 |
| Catholic Charities of BuffaloEIN 16-0743251 | Human Services | NY | $34,668,837Large | 91.01 |
| Catholic Charities of Los AngelesEIN 95-1690973 | Human Services | CA | $38,301,614Large | 96.16 |
| Catholic Charities of Northeast KansasEIN 48-1181305 | Human Services | KS | $25,350,672Large | 91.16 |
| Catholic Charities of Northern NevadaEIN 88-0339754 | Human Services | NV | $13,099,433Mid-sized | 91.45 |
| Catholic Charities of Santa Clara CountyEIN 94-2762269 | Human Services | CA | $35,534,021Large | 87.91 |
| Catholic Charities of Southern MinnesotaEIN 41-0721636 | Human Services | MN | $2,840,617Small | 93.42 |
| Catholic Charities of SpokaneEIN 91-0569880 | Human Services | WA | $16,225,818Large | 90.52 |
| Catholic Charities of St. Paul and MinneapolisEIN 41-1302487 | Human Services | MN | $50,683,237Large | 92.01 |
| Catholic Charities of the Archdiocese of Galveston-HoustonEIN 74-1109733 | Human Services | TX | $38,475,867Large | 93.20 |
| Catholic Charities of the Archdiocese of MilwaukeeEIN 39-0806321 | Human Services | WI | $6,103,750Mid-sized | 90.64 |
| Catholic Charities of the Archdiocese of Oklahoma CityEIN 73-0636561 | Human Services | OK | $8,014,721Mid-sized | 90.76 |
| Catholic Charities of the Archdiocese of OmahaEIN 47-0376612 | Human Services | NE | $5,110,419Mid-sized | 86.53 |
| Catholic Charities of the Diocese of FresnoEIN 94-1678938 | Human Services | CA | $5,994,629Mid-sized | 91.18 |
| Catholic Charities of the Diocese of Santa RosaEIN 94-2479393 | Human Services | CA | $13,533,849Large | 90.17 |
| Catholic Charities of the East BayEIN 94-2677202 | Human Services | CA | $6,682,589Mid-sized | 79.64 |
| Catholic Charities Southwestern OhioEIN 31-0536968 | Human Services | OH | $16,836,807Large | 87.22 |
| Catholic Charities, Archdiocese of DenverEIN 84-0686679 | Human Services | CO | $25,590,589Large | 95.04 |
| Catholic Charities, Archdiocese of St. LouisEIN 43-0653270 | Human Services | MO | $7,104,722Mid-sized | 95.47 |
| Catholic Charities, Diocese of NorwichEIN 06-0646609 | Human Services | CT | $2,105,175Small | 80.10 |
| Catholic Charities, Diocese of Venice, Inc.EIN 59-2473176 | Human Services | FL | $7,936,897Mid-sized | 90.71 |
| Catholic Community FoundationEIN 34-1908579 | Human Services | OH | $18,059,323Large | 80.25 |
| Catholic Community Services of Lane CountyEIN 93-0409105 | Human Services | OR | $4,582,187Mid-sized | 92.56 |
| Catholic Education ArizonaEIN 86-0937587 | Education | AZ | $18,380,089Large | 83.46 |
| Catholic Foundation of MaineEIN 77-0612679 | Religion | ME | $1,303,373Small | 75.35 |
| Catholic Health Initiatives Colorado FoundationEIN 84-0902211 | Health | CO | $24,601,571Large | 81.46 |
| Catholic League for Religious and Civil RightsEIN 23-7279981 | Human and Civil Rights | NY | $3,045,051Small | 77.40 |
| Catholic Legal Immigration Network. Inc. (CLINIC)EIN 52-1584951 | Human and Civil Rights | MD | $6,944,953Mid-sized | 97.17 |
| Catholic Medical Mission BoardEIN 13-5602319 | International | NY | $581,681,284Large | 97.87 |
| Catholic Near East Welfare Association (CNEWA)EIN 13-1623929 | Religion | NY | $25,303,965Large | 95.54 |
| Catholic Schools FoundationEIN 22-2485502 | Education | MA | $11,109,378Mid-sized | 96.08 |
| Catholic Social Services of AnchorageEIN 92-0037322 | Human Services | AK | $10,584,775Mid-sized | 93.25 |
| Catholic Social Services of ColumbusEIN 31-4379437 | Human Services | OH | $4,873,241Mid-sized | 96.10 |
| Catholic Social Services of Southern NebraskaEIN 47-0751554 | Human Services | NE | $6,160,111Mid-sized | 86.04 |
| 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 |
| CatholicTVEIN 04-2395520 | Religion | MA | $9,283,767Mid-sized | 80.75 |
| Catskill Animal SanctuaryEIN 14-1827972 | Animals | NY | $2,104,076Small | 96.35 |
| Caucus Educational CorporationEIN 22-3240680 | Arts, Culture, Humanities | NJ | $3,841,946Mid-sized | 74.88 |
| CBMCEIN 36-2004402 | Religion | TN | $9,309,673Mid-sized | 83.97 |
| CBMC InternationalEIN 58-1744271 | Religion | AZ | $580,511Small | 79.83 |
| CDC FoundationEIN 58-2106707 | Health | GA | $91,221,521Large | 98.23 |
| CEAPEIN 41-0990340 | Human Services | MN | $4,193,723Mid-sized | 85.73 |
| 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 |
| CEDARSEIN 47-6024881 | Human Services | NE | $12,918,567Mid-sized | 95.72 |
| Celebrity Fight Night FoundationEIN 86-0903119 | Health | AZ | $2,720,093Small | 74.05 |
| Celebrity Series of BostonEIN 22-2958508 | Arts, Culture, Humanities | MA | $7,898,914Mid-sized | 91.75 |
| Cell Phones For SoldiersEIN 20-1343425 | Human Services | MA | $559,483Small | 66.97 |
| Cenikor FoundationEIN 76-0031861 | Health | TX | $20,080,690Large | 93.59 |
| Center for a New American SecurityEIN 20-8084828 | Research and Public Policy | DC | $9,751,151Mid-sized | 96.54 |
| Center for Action and ContemplationEIN 85-0354965 | Religion | NM | $5,261,149Mid-sized | 91.09 |
| Center for American ProgressEIN 30-0126510 | Research and Public Policy | DC | $46,765,901Large | 91.15 |