| Reid Park Zoological SocietyEIN 94-2379052 | Animals | AZ | $4,017,037Mid-sized | 91.16 |
| Relevant RadioEIN 39-2003067 | Religion | WI | $14,340,533Large | 89.16 |
| Relief Nursery, Inc.EIN 93-0784800 | Human Services | OR | $3,472,400Small | 92.18 |
| Religions for PeaceEIN 13-2671065 | International | NY | $3,293,909Small | 89.00 |
| Religious Coalition for Reproductive ChoiceEIN 52-1213972 | Human and Civil Rights | DC | $1,405,840Small | 86.62 |
| Religious Community ServicesEIN 59-1309186 | Human Services | FL | $9,886,130Mid-sized | 91.45 |
| Remember NhuEIN 20-1461313 | International | OH | $3,695,880Mid-sized | 83.64 |
| Renewal MinistriesEIN 38-2385975 | Religion | MI | $1,737,697Small | 80.38 |
| Reporters Committee for Freedom of the PressEIN 52-0972043 | Human and Civil Rights | DC | $1,982,840Small | 91.90 |
| Rescue Mission of El PasoEIN 74-6062443 | Human Services | TX | $1,764,164Small | 90.12 |
| Rescue Mission of Middle GeorgiaEIN 58-6011446 | Human Services | GA | $2,723,506Small | 96.07 |
| Rescue Mission of RoanokeEIN 54-0573900 | Human Services | VA | $4,755,474Mid-sized | 90.54 |
| Rescue Mission of TrentonEIN 21-0656182 | Human Services | NJ | $5,128,473Mid-sized | 90.92 |
| Rescue Mission, SyracuseEIN 15-0532146 | Human Services | NY | $21,139,953Large | 84.75 |
| Research for ActionEIN 23-2710950 | Education | PA | $4,017,176Mid-sized | 89.27 |
| Research!AmericaEIN 52-1609875 | Research and Public Policy | VA | $3,687,258Mid-sized | 80.61 |
| ResistEIN 04-2433182 | Human and Civil Rights | MA | $1,238,224Small | 73.64 |
| ReSOURCEEIN 03-0326293 | Human Services | VT | $4,244,228Mid-sized | 88.17 |
| Resource and Crisis Center of Galveston CountyEIN 76-0121011 | Human Services | TX | $2,645,730Small | 91.88 |
| Resource Center EIN 75-1892059 | Health | TX | $7,437,379Mid-sized | 95.63 |
| Resource CentralEIN 84-0808982 | Environment | CO | $2,340,605Small | 92.51 |
| Resource Exchange International (REI)EIN 59-3043334 | International | CO | $959,270Small | 80.80 |
| Resource MediaEIN 82-0564961 | Arts, Culture, Humanities | CA | $4,243,281Mid-sized | 87.20 |
| Resources for the FutureEIN 53-0220900 | Environment | DC | $13,755,089Large | 89.69 |
| Resourcing Christian Education InternationalEIN 57-1154204 | Religion | IL | $6,823,625Mid-sized | 93.91 |
| Respiratory Health AssociationEIN 36-2222687 | Health | IL | $2,776,205Small | 81.10 |
| Respite Care, Inc.EIN 84-0840653 | Health | CO | $1,583,988Small | 84.23 |
| reStartEIN 43-1349378 | Human Services | MO | $6,716,944Mid-sized | 90.58 |
| Restavek FreedomEIN 20-8334578 | International | OH | $2,310,841Small | 100.00 |
| Restless Legs Syndrome FoundationEIN 56-1784846 | Health | TX | $907,448Small | 91.16 |
| Restoration MinistriesEIN 36-3552070 | Human Services | IL | $2,526,753Small | 92.27 |
| Restore Hope MinistriesEIN 73-1037026 | Human Services | OK | $1,208,768Small | 91.55 |
| RESULTS Educational FundEIN 95-3747267 | Research and Public Policy | DC | $12,042,341Mid-sized | 92.82 |
| Retina Foundation of the SouthwestEIN 51-0151514 | Health | TX | $3,799,510Mid-sized | 92.62 |
| Rett Syndrome Research TrustEIN 26-0687439 | Health | CT | $7,443,444Mid-sized | 82.96 |
| Return to FreedomEIN 06-1484961 | Animals | CA | $1,508,448Small | 84.69 |
| ReVive Center for Housing and HealingEIN 36-2192804 | Human Services | IL | $2,298,503Small | 85.05 |
| Reynolda House Museum of American ArtEIN 56-0810676 | Arts, Culture, Humanities | NC | $4,647,945Mid-sized | 89.12 |
| Rheumatology Research FoundationEIN 58-1654301 | Health | GA | $14,033,568Large | 92.22 |
| Rhode Island Community Food BankEIN 05-0395601 | Human Services | RI | $16,275,074Large | 84.89 |
| Rhode Island Historical SocietyEIN 05-0259110 | Arts, Culture, Humanities | RI | $2,221,741Small | 78.93 |
| Rhode Island Philharmonic Orchestra & Music SchoolEIN 05-0267451 | Arts, Culture, Humanities | RI | $5,552,169Mid-sized | 84.91 |
| Rhode Island Public RadioEIN 05-0498502 | Arts, Culture, Humanities | RI | $3,175,646Small | 84.43 |
| Rhode Island Zoological SocietyEIN 05-6016675 | Animals | RI | $9,389,910Mid-sized | 87.49 |
| Richmond Ballet, The State Ballet of VirginiaEIN 54-6049848 | Arts, Culture, Humanities | VA | $7,064,503Mid-sized | 90.94 |
| Richmond Friends of the HomelessEIN 54-1601100 | Human Services | VA | $1,759,090Small | 78.63 |
| Richmond HillEIN 54-1360535 | Religion | VA | $1,404,738Small | 77.94 |
| Richmond Performing Arts AllianceEIN 54-2028439 | Arts, Culture, Humanities | VA | $2,309,500Small | 89.80 |
| Richmond SPCAEIN 54-0506328 | Animals | VA | $6,971,781Mid-sized | 91.87 |
| Richmond SymphonyEIN 54-6024033 | Arts, Culture, Humanities | VA | $5,127,052Mid-sized | 78.97 |
| Ridgefield Library AssociationEIN 06-0692378 | Arts, Culture, Humanities | CT | $3,483,126Small | 84.58 |
| Right From The Heart MinistriesEIN 58-1995651 | Religion | GA | $1,505,071Small | 89.20 |
| Right To PlayEIN 13-4045245 | International | NY | $2,967,806Small | 74.19 |
| Riley Children's FoundationEIN 35-0868147 | Health | IN | $46,249,962Large | 88.83 |
| RIOULT Dance NYEIN 13-3700857 | Arts, Culture, Humanities | NY | $1,163,311Small | 92.68 |
| Rise Against HungerEIN 16-1541024 | International | NC | $49,757,061Large | 91.16 |
| Rising Tide CapitalEIN 11-3720098 | Human Services | NJ | $4,068,979Mid-sized | 95.65 |
| Rising Treetops at OakhurstEIN 13-5674230 | Health | NY | $2,351,959Small | 95.00 |
| River Bend FoodbankEIN 36-3147342 | Human Services | IA | $25,107,770Large | 98.23 |
| River City Food BankEIN 91-1851398 | Human Services | CA | $2,133,042Small | 87.21 |