| WestSide BabyEIN 91-2124405 | Human Services | WA | $4,595,253Mid-sized | 92.02 |
| WFAEEIN 56-1803808 | Arts, Culture, Humanities | NC | $5,696,175Mid-sized | 83.22 |
| Wheeler Mission EIN 35-0888771 | Human Services | IN | $10,996,971Mid-sized | 85.32 |
| White Ribbon AllianceEIN 20-2029170 | International | DC | $3,928,421Mid-sized | 92.38 |
| Whitetails UnlimitedEIN 39-1415070 | Animals | WI | $7,791,369Mid-sized | 76.00 |
| Wholesome WaveEIN 26-0352899 | Human Services | CT | $6,237,349Mid-sized | 80.30 |
| 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 |
| 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 |
| Wild Salmon CenterEIN 94-3166095 | Animals | OR | $3,987,894Mid-sized | 83.48 |
| WildAidEIN 20-3644441 | Animals | CA | $9,577,128Mid-sized | 100.00 |
| 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 AllianceEIN 52-1934148 | Animals | NY | $3,840,675Mid-sized | 87.25 |
| 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 for KidsEIN 57-1055054 | Human Services | SC | $4,966,602Mid-sized | 94.59 |
| Wings Over the Rockies Air & Space MuseumEIN 84-0931491 | Arts, Culture, Humanities | CO | $3,788,929Mid-sized | 82.35 |
| WINGS Program, Inc.EIN 36-3456061 | Human Services | IL | $5,380,674Mid-sized | 92.95 |
| 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 |
| 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 |
| WMFEEIN 59-6155012 | Arts, Culture, Humanities | FL | $3,865,157Mid-sized | 91.35 |
| WMHT Educational TelecommunicationsEIN 14-1400177 | Arts, Culture, Humanities | NY | $8,528,602Mid-sized | 84.54 |
| Women In Distress of Broward CountyEIN 59-1592524 | Human Services | FL | $5,537,711Mid-sized | 88.69 |
| Women's Business Development CenterEIN 36-3488628 | Community Development | IL | $4,138,715Mid-sized | 94.13 |
| Women's Care CenterEIN 35-1609945 | Health | IN | $6,642,531Mid-sized | 76.66 |
| Women's Center & Shelter of Greater PittsburghEIN 25-1264376 | Human Services | PA | $4,529,250Mid-sized | 90.96 |
| 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 |
| Woods Hole Research CenterEIN 04-3005094 | Research and Public Policy | MA | $8,861,257Mid-sized | 84.80 |
| Worcester Art MuseumEIN 04-1988530 | Arts, Culture, Humanities | MA | $10,758,445Mid-sized | 84.14 |
| Worcester County Food BankEIN 04-3071457 | Human Services | MA | $12,444,808Mid-sized | 93.42 |
| 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 Northern CaliforniaEIN 94-1156356 | International | CA | $3,655,597Mid-sized | 83.42 |
| 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 Missionary PressEIN 35-1076405 | Religion | IN | $4,631,966Mid-sized | 91.39 |
| World Monuments FundEIN 13-2571900 | Arts, Culture, Humanities | NY | $12,445,266Mid-sized | 85.92 |
| World Pediatric ProjectEIN 54-1953305 | International | VA | $8,680,295Mid-sized | 91.00 |
| World Science FestivalEIN 43-2095418 | Arts, Culture, Humanities | NY | $5,725,616Mid-sized | 75.87 |
| Worldserve InternationalEIN 43-1535009 | International | MO | $3,949,288Mid-sized | 87.25 |
| WQED MultimediaEIN 25-1010296 | Arts, Culture, Humanities | PA | $11,265,120Mid-sized | 78.99 |
| Writers TheatreEIN 36-3847280 | Arts, Culture, Humanities | IL | $7,509,698Mid-sized | 88.01 |
| WWOZEIN 58-1702220 | Arts, Culture, Humanities | LA | $5,033,292Mid-sized | 89.88 |
| WXXI Public Broadcasting CouncilEIN 16-0838086 | Arts, Culture, Humanities | NY | $12,417,898Mid-sized | 91.98 |
| Wyman CenterEIN 43-0653263 | Human Services | MO | $7,965,727Mid-sized | 93.91 |
| WYPREIN 31-1770828 | Arts, Culture, Humanities | MD | $5,053,059Mid-sized | 85.59 |
| Xerces Society for Invertebrate ConservationEIN 51-0175253 | Animals | OR | $3,906,555Mid-sized | 93.04 |
| Yamhill Community Action PartnershipEIN 93-0758732 | Human Services | OR | $6,642,102Mid-sized | 95.47 |
| Yellowstone AcademyEIN 76-0686870 | Education | TX | $5,500,674Mid-sized | 81.97 |
| YIVO Institute for Jewish ResearchEIN 13-1641082 | Arts, Culture, Humanities | NY | $4,795,588Mid-sized | 94.12 |
| YMCA of Dane CountyEIN 39-0806253 | Human Services | WI | $11,526,375Mid-sized | 82.03 |