| Boys & Girls Clubs of South Puget SoundEIN 91-1597689 | Human Services | WA | $7,355,661Mid-sized | 91.97 |
| Boys & Girls Clubs of Southern MaineEIN 01-0211543 | Human Services | ME | $2,402,015Small | 91.54 |
| Boys & Girls Clubs of Southern NevadaEIN 88-0093150 | Human Services | NV | $7,488,099Mid-sized | 93.73 |
| Boys & Girls Clubs of St. Helena and CalistogaEIN 68-0226714 | Human Services | CA | $1,838,377Small | 90.61 |
| Boys & Girls Clubs of Tampa BayEIN 59-0624368 | Human Services | FL | $6,826,014Mid-sized | 90.53 |
| Boys & Girls Clubs of the Austin AreaEIN 74-6087356 | Human Services | TX | $7,043,927Mid-sized | 91.83 |
| Boys & Girls Clubs of the Fox ValleyEIN 39-1225709 | Human Services | WI | $4,138,206Mid-sized | 97.17 |
| Boys & Girls Clubs of the MidlandsEIN 47-0467350 | Human Services | NE | $7,774,174Mid-sized | 92.22 |
| Boys & Girls Clubs of the PeninsulaEIN 94-1552134 | Human Services | CA | $9,042,176Mid-sized | 95.70 |
| Boys & Girls Clubs of the SuncoastEIN 59-1566799 | Human Services | FL | $2,486,352Small | 94.00 |
| Boys & Girls Clubs of the Virginia PeninsulaEIN 54-0538202 | Human Services | VA | $4,584,939Mid-sized | 96.46 |
| 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 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 Hope Girls Hope InternationalEIN 51-0182614 | Human Services | MO | $3,780,748Mid-sized | 95.33 |
| Boys TownEIN 47-0376606 | Human Services | NE | $325,615,341Large | 90.45 |
| 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 |
| 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 for the CityEIN 52-1138207 | Human Services | DC | $12,783,659Mid-sized | 92.61 |
| BreakthroughEIN 36-3810926 | Human Services | IL | $6,843,784Mid-sized | 96.46 |
| Breakthrough, Central TexasEIN 74-2991346 | Education | TX | $3,557,867Mid-sized | 90.24 |
| 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 |
| Breathe California of Los Angeles CountyEIN 95-1641451 | Health | CA | $2,578,698Small | 91.52 |
| 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 |
| Bridges OutreachEIN 22-3190141 | Human Services | NJ | $1,220,772Small | 93.11 |
| Bridges to ProsperityEIN 54-2031102 | International | CO | $5,269,853Mid-sized | 93.98 |
| 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 ProspectEIN 52-2363234 | Education | CA | $2,346,386Small | 92.47 |
| 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 |
| Brooklyn Botanic GardenEIN 11-2417338 | Environment | NY | $22,441,961Large | 93.86 |
| 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 |
| Bruce MuseumEIN 23-7105904 | Arts, Culture, Humanities | CT | $5,670,884Mid-sized | 91.41 |
| Bryan/College Station Habitat for HumanityEIN 74-2542417 | Community Development | TX | $2,610,273Small | 92.87 |
| Bucks County SPCAEIN 23-1365196 | Animals | PA | $2,042,217Small | 91.66 |
| Buffalo Bayou PartnershipEIN 76-0183954 | Environment | TX | $5,366,711Mid-sized | 96.66 |
| Buffalo Bill Center of the WestEIN 83-0180403 | Arts, Culture, Humanities | WY | $12,651,943Mid-sized | 91.69 |
| BUILD, Inc.EIN 23-7022085 | Human Services | IL | $2,698,597Small | 93.96 |
| Building Goodness FoundationEIN 54-1956136 | Community Development | VA | $2,098,192Small | 93.83 |
| Building Homes for HeroesEIN 20-4540852 | Human Services | NY | $11,604,904Mid-sized | 96.46 |
| buildOnEIN 22-3128648 | International | CT | $15,454,830Large | 93.73 |
| Burn InstituteEIN 23-7260718 | Health | CA | $1,287,313Small | 98.17 |
| Business Executives for National SecurityEIN 52-1271179 | Research and Public Policy | DC | $5,840,585Mid-sized | 91.72 |
| Buzzards Bay CoalitionEIN 04-2971978 | Environment | MA | $5,263,968Mid-sized | 91.87 |
| Cal Ripken, Sr. FoundationEIN 52-2310500 | Human Services | MD | $21,777,183Large | 90.45 |
| CalderaEIN 94-3235649 | Human Services | OR | $2,644,552Small | 90.17 |