| Wildlife Habitat CouncilEIN 52-1558579 | Animals | MD | $2,667,141Small | 80.68 |
| Wilkinson CenterEIN 75-2712117 | Human Services | TX | $2,277,173Small | 89.88 |
| Will Rogers Motion Picture Pioneers FoundationEIN 15-0533551 | Health | CA | $4,754,907Mid-sized | 83.68 |
| Williamstown Theatre FestivalEIN 04-2237311 | Arts, Culture, Humanities | MA | $4,233,168Mid-sized | 85.00 |
| WiNGSEIN 75-0800699 | Human Services | TX | $4,682,777Mid-sized | 87.82 |
| Wings of HopeEIN 43-0909606 | International | MO | $2,733,985Small | 89.02 |
| Wings Over the Rockies Air & Space MuseumEIN 84-0931491 | Arts, Culture, Humanities | CO | $3,788,929Mid-sized | 82.35 |
| Winston-Salem Rescue MissionEIN 56-0891921 | Human Services | NC | $2,977,443Small | 84.84 |
| Wiregrass United WayEIN 63-6000270 | Community Development | AL | $3,049,842Small | 83.42 |
| Wisconsin Historical Foundation, Inc.EIN 39-0921093 | Arts, Culture, Humanities | WI | $5,089,058Mid-sized | 81.81 |
| Wisconsin Humane SocietyEIN 39-0810533 | Animals | WI | $9,223,669Mid-sized | 88.90 |
| Wisconsin Public Radio AssociationEIN 23-7363536 | Arts, Culture, Humanities | WI | $9,045,462Mid-sized | 82.91 |
| WITFEIN 23-1629016 | Arts, Culture, Humanities | PA | $11,486,151Mid-sized | 86.18 |
| WITNESSEIN 13-4167155 | International | NY | $3,440,023Small | 83.13 |
| WJCTEIN 59-0711482 | Arts, Culture, Humanities | FL | $4,338,648Mid-sized | 89.67 |
| WKNOEIN 62-0525567 | Arts, Culture, Humanities | TN | $5,231,595Mid-sized | 87.36 |
| WMHT Educational TelecommunicationsEIN 14-1400177 | Arts, Culture, Humanities | NY | $8,528,602Mid-sized | 84.54 |
| WMNFEIN 59-1619213 | Arts, Culture, Humanities | FL | $1,625,680Small | 84.13 |
| Wolf River ConservancyEIN 62-1245975 | Environment | TN | $1,172,502Small | 86.64 |
| Wolfpack ClubEIN 56-0650623 | Education | NC | $23,648,439Large | 89.62 |
| Women at Risk InternationalEIN 77-0664609 | International | MI | $2,921,136Small | 89.87 |
| Women EmployedEIN 36-2969526 | Human Services | IL | $2,349,519Small | 82.37 |
| Women In Distress of Broward CountyEIN 59-1592524 | Human Services | FL | $5,537,711Mid-sized | 88.69 |
| Women's Funding NetworkEIN 41-1685134 | Human and Civil Rights | CA | $1,539,286Small | 86.07 |
| Women's Law ProjectEIN 23-7354667 | Human and Civil Rights | PA | $1,116,238Small | 80.99 |
| Women's Link WorldwideEIN 03-0371141 | Human and Civil Rights | NY | $2,329,429Small | 81.15 |
| Women's Lunch PlaceEIN 22-2514148 | Human Services | MA | $2,943,376Small | 88.22 |
| Women's Resources of Monroe CountyEIN 23-2141496 | Human Services | PA | $1,383,184Small | 80.46 |
| Women's WayEIN 23-1989161 | Human Services | PA | $744,362Small | 85.13 |
| WomenHeart: The National Coalition for Women with Heart DiseaseEIN 52-2148006 | Health | DC | $4,265,378Mid-sized | 85.16 |
| Womens International Zionist Organization USAEIN 13-3041381 | International | NY | $5,318,264Mid-sized | 88.21 |
| Womens Media CenterEIN 38-3727585 | Human and Civil Rights | DC | $1,501,847Small | 86.74 |
| Woodrow Wilson National Fellowship FoundationEIN 21-0703075 | Education | NJ | $24,168,314Large | 87.50 |
| Woods Hole Research CenterEIN 04-3005094 | Research and Public Policy | MA | $8,861,257Mid-sized | 84.80 |
| Woodstock Farm Animal SanctuaryEIN 20-1552990 | Animals | NY | $1,906,731Small | 82.49 |
| Worcester Art MuseumEIN 04-1988530 | Arts, Culture, Humanities | MA | $10,758,445Mid-sized | 84.14 |
| Worcester County Horticultural SocietyEIN 04-1988945 | Environment | MA | $3,644,678Mid-sized | 81.83 |
| Working WardrobesEIN 33-0669145 | Education | CA | $4,227,482Mid-sized | 87.65 |
| World Affairs Council of Dallas/Fort WorthEIN 75-0855628 | International | TX | $2,429,418Small | 80.44 |
| World Affairs Council of Northern CaliforniaEIN 94-1156356 | International | CA | $3,655,597Mid-sized | 83.42 |
| World Affairs Council of SeattleEIN 91-0586924 | International | WA | $974,714Small | 81.62 |
| World Animal ProtectionEIN 04-2718182 | Animals | NY | $5,375,719Mid-sized | 80.55 |
| World Bicycle ReliefEIN 20-5080679 | International | IL | $9,162,450Mid-sized | 84.35 |
| World Business ChicagoEIN 36-4313685 | Community Development | IL | $12,006,180Mid-sized | 86.90 |
| World CareEIN 86-0830973 | International | AZ | $1,335,952Small | 80.12 |
| World Christian BroadcastingEIN 75-1541354 | Religion | TN | $3,483,492Small | 89.67 |
| World Compassion Terry Law MinistriesEIN 73-0934739 | Religion | OK | $2,545,146Small | 84.52 |
| World EducationEIN 13-1804349 | International | MA | $48,607,047Large | 87.25 |
| World Emergency ReliefEIN 95-4014743 | International | CA | $23,969,741Large | 83.97 |
| World Environment CenterEIN 13-3100197 | Research and Public Policy | DC | $2,665,851Small | 88.39 |
| World Food Program USAEIN 13-3843435 | International | DC | $17,450,941Large | 85.41 |
| World Forestry CenterEIN 93-6034757 | Environment | OR | $2,177,341Small | 89.70 |
| World HelpEIN 54-1615454 | International | VA | $35,916,092Large | 88.43 |
| World Indigenous MissionsEIN 74-2192909 | Religion | TX | $1,734,210Small | 86.49 |
| World Institute on DisabilityEIN 94-2911623 | Research and Public Policy | CA | $2,330,200Small | 89.50 |
| World Link MinistriesEIN 93-1135565 | Religion | TX | $1,750,645Small | 80.98 |
| World MissionEIN 38-3213457 | Religion | MI | $2,734,899Small | 88.46 |
| World Monuments FundEIN 13-2571900 | Arts, Culture, Humanities | NY | $12,445,266Mid-sized | 85.92 |
| World Outreach Ministry FoundationEIN 91-1609811 | Religion | WA | $1,141,894Small | 81.78 |
| World Pulse VoicesEIN 41-2065177 | International | OR | $2,227,830Small | 84.05 |