| The W. Haywood Burns InstituteEIN 81-0594086 | Human and Civil Rights | CA | $3,972,480Mid-sized | 87.78 |
| The Washington SpectatorEIN 51-0217084 | Arts, Culture, Humanities | NY | $1,171,094Small | 68.37 |
| The West End House Boys & Girls Clubs of Allston-BrightonEIN 04-2105825 | Human Services | MA | $3,394,809Small | 96.63 |
| The Wetlands InitiativeEIN 36-3942451 | Environment | IL | $1,917,514Small | 99.46 |
| The Wild Animal SanctuaryEIN 84-1351483 | Animals | CO | $14,203,892Large | 92.38 |
| The Wild CenterEIN 14-1811534 | Environment | NY | $5,741,631Mid-sized | 86.69 |
| The Wildcat SanctuaryEIN 22-3857401 | Animals | MN | $1,245,790Small | 92.60 |
| The Wilderness SocietyEIN 53-0167933 | Environment | DC | $31,030,390Large | 89.71 |
| The Wing Luke Museum of the Asian Pacific American ExperienceEIN 91-6067431 | Arts, Culture, Humanities | WA | $2,713,683Small | 82.92 |
| The Winston-Salem FoundationEIN 56-6037615 | Community Development | NC | $43,190,146Large | 99.79 |
| The Women's Center of Tarrant CountyEIN 75-1501868 | Human Services | TX | $4,362,401Mid-sized | 94.05 |
| The Women's Center, VirginiaEIN 23-7423496 | Human Services | VA | $2,865,951Small | 83.90 |
| The Women's Center, WisconsinEIN 39-1269698 | Human Services | WI | $2,192,093Small | 86.46 |
| The Women's Foundation of ColoradoEIN 84-1039305 | Human and Civil Rights | CO | $3,377,212Small | 85.58 |
| The Women's Fund Miami-DadeEIN 65-0436923 | Human and Civil Rights | FL | $793,154Small | 82.19 |
| The Women's Fund of Central OhioEIN 31-1784310 | Human and Civil Rights | OH | $1,517,707Small | 86.18 |
| The Women's HomeEIN 74-1467811 | Human Services | TX | $4,186,752Mid-sized | 89.15 |
| The Wooden FloorEIN 33-0299356 | Education | CA | $2,732,524Small | 85.41 |
| The WoodlandsEIN 25-1818538 | Health | PA | $2,008,489Small | 79.36 |
| The Woodruff Arts CenterEIN 58-0633971 | Arts, Culture, Humanities | GA | $96,220,136Large | 87.65 |
| The Woodson CenterEIN 52-1217891 | Community Development | DC | $5,621,177Mid-sized | 84.04 |
| The Works MuseumEIN 41-1570750 | Arts, Culture, Humanities | MN | $1,279,714Small | 79.93 |
| The YMCA of Columbia-WillametteEIN 93-0386981 | Human Services | OR | $26,372,084Large | 91.02 |
| The Zakat Foundation of AmericaEIN 36-4476244 | International | IL | $11,478,047Mid-sized | 98.23 |
| The Zoo SocietyEIN 91-6066667 | Animals | WA | $2,428,208Small | 89.19 |
| Theatre Bay AreaEIN 94-2476071 | Arts, Culture, Humanities | CA | $1,042,524Small | 81.82 |
| Theatre Communications GroupEIN 13-6160130 | Arts, Culture, Humanities | NY | $9,750,806Mid-sized | 90.94 |
| Theatre for a New AudienceEIN 13-3059081 | Arts, Culture, Humanities | NY | $7,070,763Mid-sized | 93.28 |
| Theatre Under The StarsEIN 74-1621647 | Arts, Culture, Humanities | TX | $17,408,127Large | 87.85 |
| TheatreWorksEIN 94-2831245 | Arts, Culture, Humanities | CA | $7,679,115Mid-sized | 78.91 |
| Thelonious Monk Institute of JazzEIN 52-1544030 | Arts, Culture, Humanities | DC | $4,330,076Mid-sized | 88.81 |
| Theodore Roosevelt Conservation PartnershipEIN 04-3706385 | Environment | DC | $4,434,421Mid-sized | 92.27 |
| Theological Book NetworkEIN 35-2166244 | Religion | MI | $2,758,802Small | 84.99 |
| There With CareEIN 68-0606330 | Health | CO | $2,086,139Small | 80.80 |
| Thermal Belt Outreach MinistryEIN 56-1793796 | Human Services | NC | $1,217,403Small | 87.09 |
| Think SmallEIN 41-1260581 | Human Services | MN | $34,542,069Large | 88.29 |
| Third Street Music School SettlementEIN 13-5596825 | Education | NY | $7,872,264Mid-sized | 92.27 |
| This Is The Place FoundationEIN 84-1426573 | Environment | UT | $6,104,884Mid-sized | 88.14 |
| Thistle FarmsEIN 58-2050089 | Human Services | TN | $3,578,410Mid-sized | 88.43 |
| Thomas Irvine Dodge Nature CenterEIN 41-6081794 | Environment | MN | $2,497,503Small | 89.57 |
| Thomas Jefferson FoundationEIN 54-0505959 | Arts, Culture, Humanities | VA | $31,701,531Large | 91.32 |
| Thomas More Law CenterEIN 38-3448297 | Human and Civil Rights | MI | $1,799,459Small | 81.10 |
| Thomasville Center for the ArtsEIN 58-1360252 | Arts, Culture, Humanities | GA | $1,654,090Small | 91.25 |
| Thompson Child & Family FocusEIN 56-0547460 | Human Services | NC | $15,157,223Large | 81.11 |
| Thompson Island Outward Bound Education Center (TIOBEC)EIN 04-3027900 | Education | MA | $6,866,009Mid-sized | 90.06 |
| Thornwell Home for ChildrenEIN 57-0314418 | Human Services | SC | $9,386,658Mid-sized | 96.11 |
| Thoroughbred Retirement FoundationEIN 13-3132741 | Animals | NY | $2,569,693Small | 72.24 |
| Thousand CurrentsEIN 77-0071852 | International | CA | $4,669,023Mid-sized | 94.22 |
| Three SquareEIN 30-0396918 | Human Services | NV | $84,710,940Large | 97.23 |
| Thrive Counseling CenterEIN 36-2179793 | Health | IL | $2,143,605Small | 88.22 |
| Thrive DCEIN 52-1485474 | Human Services | DC | $3,114,337Small | 91.38 |
| Thrive NetworksEIN 33-0316095 | International | CA | $8,327,900Mid-sized | 84.76 |
| Thrive St. LouisEIN 43-1304395 | Health | MO | $2,984,806Small | 87.98 |
| Thru the Bible Radio NetworkEIN 95-6145276 | Religion | CA | $20,313,129Large | 86.33 |
| Thunderbird Lodge Preservation SocietyEIN 88-0434866 | Arts, Culture, Humanities | NV | $1,411,162Small | 73.55 |
| Thurgood Marshall College FundEIN 41-1750692 | Education | DC | $22,162,863Large | 92.15 |
| Tibet House USEIN 13-3438221 | Arts, Culture, Humanities | NY | $2,534,820Small | 76.33 |
| Tides CenterEIN 94-3213100 | Community Development | CA | $110,657,162Large | 96.28 |
| Tiger Athletic FoundationEIN 72-1004960 | Human Services | LA | $36,937,190Large | 90.45 |
| Tiger HavenEIN 62-1536897 | Animals | TN | $3,041,201Small | 81.78 |