| 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 |
| BRING RecyclingEIN 23-7137120 | Environment | OR | $1,135,788Small | 91.90 |
| Bris AvrohomEIN 22-2664361 | Religion | NJ | $1,226,967Small | 71.71 |
| Broad Street MinistryEIN 20-2760310 | Human Services | PA | $2,680,064Small | 89.86 |
| Broadway Cares/Equity Fights AIDSEIN 13-3458820 | Health | NY | $22,604,203Large | 81.84 |
| Brooklyn Academy of MusicEIN 11-2201344 | Arts, Culture, Humanities | NY | $51,562,831Large | 85.15 |
| Brooklyn Botanic GardenEIN 11-2417338 | Environment | NY | $22,441,961Large | 93.86 |
| Brooklyn Historical SocietyEIN 11-1630813 | Arts, Culture, Humanities | NY | $5,401,797Mid-sized | 85.87 |
| Brooklyn MuseumEIN 11-1672743 | Arts, Culture, Humanities | NY | $43,855,989Large | 87.89 |
| Brooklyn Teen ChallengeEIN 11-2510315 | Health | NY | $1,436,310Small | 78.31 |
| Brooklyn Youth Chorus AcademyEIN 11-3129249 | Education | NY | $2,640,431Small | 89.77 |
| Brookwood FloridaEIN 59-0624387 | Human Services | FL | $1,491,276Small | 91.05 |
| Broome County Council of ChurchesEIN 15-0547374 | Human Services | NY | $4,822,734Mid-sized | 92.74 |
| Brother's Brother FoundationEIN 34-6562544 | International | PA | $119,695,345Large | 92.92 |
| Brown County United WayEIN 39-0806299 | Community Development | WI | $4,380,293Mid-sized | 89.90 |
| Bruce MuseumEIN 23-7105904 | Arts, Culture, Humanities | CT | $5,670,884Mid-sized | 91.41 |
| Bryan's HouseEIN 75-2217559 | Health | TX | $2,050,917Small | 85.57 |
| Bryan/College Station Habitat for HumanityEIN 74-2542417 | Community Development | TX | $2,610,273Small | 92.87 |
| Bryn Mawr Film InstituteEIN 04-3682610 | Arts, Culture, Humanities | PA | $2,922,165Small | 87.29 |
| BsideU For Life Pregnancy & Life Skills CenterEIN 61-1142823 | Health | KY | $1,340,606Small | 80.18 |
| Bucks County SPCAEIN 23-1365196 | Animals | PA | $2,042,217Small | 91.66 |