| Boys & Girls Clubs of the Virginia PeninsulaEIN 54-0538202 | Human Services | VA | $4,584,939Mid-sized | 96.46 |
| Boys & Girls Clubs of Thurston CountyEIN 91-2124629 | Human Services | WA | $1,860,956Small | 84.22 |
| Boys & Girls Clubs of Truckee MeadowsEIN 88-0142068 | Human Services | NV | $9,163,744Mid-sized | 92.22 |
| Boys & Girls Clubs of TucsonEIN 86-0172257 | Human Services | AZ | $3,362,541Small | 90.61 |
| Boys & Girls Clubs of Wake CountyEIN 56-0863051 | Human Services | NC | $6,001,310Mid-sized | 91.26 |
| Boys & Girls Clubs of Wichita FallsEIN 75-0883102 | Human Services | TX | $2,494,370Small | 88.22 |
| Boys & Girls Clubs of Yellowstone CountyEIN 81-0308003 | Human Services | MT | $2,072,336Small | 77.60 |
| Boys & Girls Harbor, New YorkEIN 13-6015256 | Human Services | NY | $7,935,544Mid-sized | 72.09 |
| Boys & Girls Ranches of AlabamaEIN 63-0475713 | Human Services | AL | $3,469,870Small | 91.04 |
| Boys and Girls Country of HoustonEIN 74-6026198 | Human Services | TX | $6,395,067Mid-sized | 90.85 |
| Boys and Girls Home of North CarolinaEIN 58-1387871 | Human Services | NC | $9,839,942Mid-sized | 89.21 |
| Boys Hope Girls Hope InternationalEIN 51-0182614 | Human Services | MO | $3,780,748Mid-sized | 95.33 |
| Boys Hope Girls Hope, Affiliates EIN 43-1209928 | Human Services | MO | $13,904,136Large | 84.80 |
| Boys TownEIN 47-0376606 | Human Services | NE | $325,615,341Large | 90.45 |
| Boys Town Jerusalem Foundation of AmericaEIN 11-5324002 | Human Services | NY | $6,530,883Mid-sized | 85.69 |
| BRAC USAEIN 20-8456741 | International | NY | $8,445,127Mid-sized | 85.85 |
| Bradley Free Clinic of Roanoke ValleyEIN 23-7380491 | Health | VA | $3,571,756Mid-sized | 85.43 |
| BradyEIN 52-1285097 | Human and Civil Rights | DC | $4,329,018Mid-sized | 70.11 |
| Braille Institute of AmericaEIN 95-1641426 | Human Services | CA | $23,465,454Large | 87.11 |
| Brain & Behavior Research FoundationEIN 31-1020010 | Health | NY | $17,729,428Large | 90.71 |
| Brain Research FoundationEIN 36-2477928 | Health | IL | $2,056,920Small | 91.34 |
| Brandywine Valley SPCAEIN 23-1381030 | Animals | PA | $7,281,981Mid-sized | 91.36 |
| Brave New FilmsEIN 94-3209789 | Arts, Culture, Humanities | CA | $2,317,536Small | 86.63 |
| Bravo! VailEIN 84-1074065 | Arts, Culture, Humanities | CO | $7,239,049Mid-sized | 83.62 |
| BrazilFoundationEIN 13-4131482 | International | NY | $3,448,809Small | 91.42 |
| Brazos Valley Food BankEIN 74-2380446 | Human Services | TX | $11,892,946Mid-sized | 94.94 |
| Bread & Roses PresentsEIN 94-2260301 | Arts, Culture, Humanities | CA | $719,048Small | 72.23 |
| Bread for the CityEIN 52-1138207 | Human Services | DC | $12,783,659Mid-sized | 92.61 |
| Bread of Life MissionEIN 91-6057907 | Human Services | WA | $2,156,133Small | 84.10 |
| Bread of the Mighty Food BankEIN 59-2805577 | Human Services | FL | $7,704,466Mid-sized | 77.01 |
| BreakthroughEIN 36-3810926 | Human Services | IL | $6,843,784Mid-sized | 96.46 |
| Breakthrough CollaborativeEIN 94-3140620 | Education | CA | $2,069,932Small | 81.78 |
| Breakthrough, Central TexasEIN 74-2991346 | Education | TX | $3,557,867Mid-sized | 90.24 |
| Breast Cancer AllianceEIN 06-1453500 | Health | CT | $1,926,201Small | 81.31 |
| Breast Cancer Prevention PartnersEIN 94-3155886 | Health | CA | $3,595,775Mid-sized | 90.00 |
| Breast Cancer Research FoundationEIN 13-3727250 | Health | NY | $76,886,163Large | 90.48 |
| Breast Cancer Resource CenterEIN 74-2743333 | Health | TX | $1,443,985Small | 88.23 |
| Breastcancer.orgEIN 23-3082851 | Health | PA | $4,652,555Mid-sized | 89.32 |
| Breathe California of Los Angeles CountyEIN 95-1641451 | Health | CA | $2,578,698Small | 91.52 |
| Breathe California, Golden Gate Public Health PartnershipEIN 94-0836760 | Health | CA | $936,095Small | 83.03 |
| Brennan Center for Justice at NYU School of LawEIN 13-3839293 | Human and Civil Rights | NY | $17,732,433Large | 91.92 |
| Bridge Builders InternationalEIN 93-1162941 | Religion | OR | $914,358Small | 93.09 |
| Bridge CommunitiesEIN 36-3705951 | Human Services | IL | $3,537,590Mid-sized | 91.44 |
| Bridge HouseEIN 84-1440292 | Human Services | CO | $2,897,427Small | 95.05 |
| Bridge Over Troubled WatersEIN 04-2472126 | Human Services | MA | $6,142,736Mid-sized | 85.66 |
| Bridgeport Rescue MissionEIN 06-1362705 | Human Services | CT | $4,830,160Mid-sized | 76.10 |
| Bridges from School to WorkEIN 52-1655740 | Human Services | MD | $7,510,431Mid-sized | 79.84 |
| Bridges OutreachEIN 22-3190141 | Human Services | NJ | $1,220,772Small | 93.11 |
| Bridges to CommunityEIN 13-3731405 | International | NY | $2,059,742Small | 80.01 |
| Bridges to ProsperityEIN 54-2031102 | International | CO | $5,269,853Mid-sized | 93.98 |
| Bridgewater HealthCare FoundationEIN 52-1296840 | Human Services | VA | $1,839,598Small | 88.93 |
| BridgingEIN 41-1725396 | Human Services | MN | $8,763,470Mid-sized | 91.17 |
| Brigade Boys & Girls ClubEIN 56-0529939 | Human Services | NC | $2,124,325Small | 92.21 |
| Bright BeginningsEIN 52-1697917 | Human Services | DC | $5,112,933Mid-sized | 90.80 |
| Bright by ThreeEIN 84-1382420 | Human Services | CO | $1,413,973Small | 93.90 |
| Bright Hope InternationalEIN 23-7004991 | Religion | IL | $5,613,402Mid-sized | 85.85 |
| Bright PinkEIN 51-0619889 | Health | IL | $2,689,062Small | 84.42 |
| Bright ProspectEIN 52-2363234 | Education | CA | $2,346,386Small | 92.47 |
| BrightFocus FoundationEIN 23-7337229 | Health | MD | $35,815,491Large | 82.58 |
| Brighton Park Neighborhood CouncilEIN 36-4229387 | Community Development | IL | $3,677,373Mid-sized | 90.58 |