| Weld Food BankEIN 74-2244826 | Human Services | CO | $21,709,830Large | 100.00 |
| Wellspring HouseEIN 04-2735048 | Human Services | MA | $2,248,487Small | 91.57 |
| Wesley Community CenterEIN 74-1132578 | Human Services | TX | $3,783,210Mid-sized | 95.80 |
| West Michigan Youth for ChristEIN 38-1578801 | Religion | MI | $1,455,317Small | 90.60 |
| West Point Association of GraduatesEIN 14-1260763 | Education | NY | $49,294,411Large | 93.17 |
| West Side Catholic CenterEIN 34-1244687 | Human Services | OH | $2,838,582Small | 92.66 |
| Westerly Public Library and Wilcox ParkEIN 05-0259005 | Arts, Culture, Humanities | RI | $2,910,579Small | 91.84 |
| Western Environmental Law CenterEIN 93-1010269 | Environment | OR | $2,183,909Small | 97.58 |
| Western Pennsylvania ConservancyEIN 25-1053485 | Environment | PA | $20,092,130Large | 91.43 |
| Western Reserve Historical SocietyEIN 34-0714724 | Arts, Culture, Humanities | OH | $6,397,465Mid-sized | 94.12 |
| Western Resource AdvocatesEIN 84-1113831 | Environment | CO | $4,931,267Mid-sized | 94.54 |
| Western Tidewater Free ClinicEIN 26-3302837 | Health | VA | $10,958,717Mid-sized | 91.45 |
| Westmoreland County Food BankEIN 25-1422682 | Human Services | PA | $11,874,832Mid-sized | 90.51 |
| WestSide BabyEIN 91-2124405 | Human Services | WA | $4,595,253Mid-sized | 92.02 |
| WETAEIN 53-0242992 | Arts, Culture, Humanities | VA | $95,522,445Large | 97.87 |
| WGBH BostonEIN 04-2104397 | Arts, Culture, Humanities | MA | $198,269,723Large | 95.88 |
| Whidbey Animals Improvement FoundationEIN 91-1488861 | Animals | WA | $1,553,390Small | 92.65 |
| White Ribbon AllianceEIN 20-2029170 | International | DC | $3,928,421Mid-sized | 92.38 |
| Whitney Museum of American ArtEIN 13-1789318 | Arts, Culture, Humanities | NY | $75,209,000Large | 90.62 |
| WhyHungerEIN 13-2805575 | Human Services | NY | $2,958,115Small | 91.41 |
| WHYYEIN 23-1438083 | Arts, Culture, Humanities | PA | $34,883,641Large | 91.43 |
| Wichita Children's HomeEIN 48-0547706 | Human Services | KS | $6,008,438Mid-sized | 91.99 |
| Wichita Falls Area Food BankEIN 75-1812865 | Human Services | TX | $7,098,794Mid-sized | 93.08 |
| Wichita Falls Faith MissionEIN 75-1779401 | Human Services | TX | $2,026,737Small | 94.98 |
| Wichita Symphony SocietyEIN 48-0671518 | Arts, Culture, Humanities | KS | $2,157,806Small | 92.56 |
| Wikimedia FoundationEIN 20-0049703 | Arts, Culture, Humanities | CA | $69,076,192Large | 96.15 |
| Wild Earth AlliesEIN 04-2730954 | Environment | MD | $5,084,545Mid-sized | 93.31 |
| WILD FoundationEIN 23-7389749 | Animals | CO | $5,499,834Mid-sized | 96.66 |
| WildAidEIN 20-3644441 | Animals | CA | $9,577,128Mid-sized | 100.00 |
| WILDCOASTEIN 77-0536297 | Environment | CA | $2,120,052Small | 92.56 |
| WildEarth GuardiansEIN 85-0406306 | Environment | NM | $3,648,027Mid-sized | 92.07 |
| Wilderness InquiryEIN 93-0708637 | Education | MN | $3,641,880Mid-sized | 96.45 |
| Wildlife Center of VirginiaEIN 54-1215402 | Animals | VA | $1,633,864Small | 91.19 |
| Wildlife Conservation NetworkEIN 30-0108469 | Animals | CA | $17,484,055Large | 98.23 |
| Wildlife Conservation SocietyEIN 13-1740011 | Animals | NY | $265,855,513Large | 91.96 |
| Wildlife Rescue & RehabilitationEIN 74-2012897 | Animals | TX | $2,479,942Small | 95.13 |
| William Temple HouseEIN 93-0559964 | Human Services | OR | $2,146,769Small | 92.33 |
| WINGS for KidsEIN 57-1055054 | Human Services | SC | $4,966,602Mid-sized | 94.59 |
| WINGS Program, Inc.EIN 36-3456061 | Human Services | IL | $5,380,674Mid-sized | 92.95 |
| Wisconsin Women's Health FoundationEIN 39-1900678 | Health | WI | $2,261,658Small | 90.94 |
| WMFEEIN 59-6155012 | Arts, Culture, Humanities | FL | $3,865,157Mid-sized | 91.35 |
| WNETEIN 26-2810489 | Arts, Culture, Humanities | NY | $131,298,216Large | 90.37 |
| Wolf Trap Foundation for the Performing ArtsEIN 23-7011544 | Arts, Culture, Humanities | VA | $36,931,309Large | 93.20 |
| Women of Tomorrow Mentor & Scholarship ProgramEIN 65-0862995 | Human Services | FL | $1,685,133Small | 91.53 |
| Women's and Children's AllianceEIN 82-0204464 | Human Services | ID | $2,546,250Small | 93.93 |
| Women's Business Development CenterEIN 36-3488628 | Community Development | IL | $4,138,715Mid-sized | 94.13 |
| Women's Center & Shelter of Greater PittsburghEIN 25-1264376 | Human Services | PA | $4,529,250Mid-sized | 90.96 |
| Women's Community Revitalization ProjectEIN 22-2840188 | Community Development | PA | $1,564,412Small | 93.14 |
| Women's Foundation for A Greater MemphisEIN 58-2207247 | Human and Civil Rights | TN | $2,038,760Small | 90.92 |
| Women's Learning PartnershipEIN 52-2199581 | International | MD | $1,749,613Small | 91.36 |
| Women's Sports FoundationEIN 23-7380557 | Human Services | NY | $3,349,280Small | 92.93 |
| Woodlawn FoundationEIN 13-3055729 | Community Development | NY | $17,995,143Large | 93.00 |
| Woodmere Art MuseumEIN 23-1381459 | Arts, Culture, Humanities | PA | $2,995,647Small | 94.69 |
| Woodrow Wilson International Center for ScholarsEIN 52-1067541 | Research and Public Policy | DC | $23,108,789Large | 90.34 |
| Woods Hole Oceanographic InstitutionEIN 04-2105850 | Research and Public Policy | MA | $236,368,081Large | 92.95 |
| Woods Humane SocietyEIN 95-2058587 | Animals | CA | $2,484,537Small | 95.05 |
| Worcester County Food BankEIN 04-3071457 | Human Services | MA | $12,444,808Mid-sized | 93.42 |
| Word of Life FellowshipEIN 13-5648615 | Religion | NY | $47,064,537Large | 93.21 |
| World Hope InternationalEIN 35-1985485 | International | VA | $19,235,029Large | 92.92 |
| World Medical ReliefEIN 38-1575570 | International | MI | $30,348,974Large | 92.73 |