| Bay Area Cancer ConnectionsEIN 77-0417605 | Health | CA | $1,621,165Small | 91.48 |
| Bay Area Discovery MuseumEIN 68-0033227 | Arts, Culture, Humanities | CA | $8,337,210Mid-sized | 91.33 |
| Beacon AcademyEIN 73-1710051 | Education | MA | $1,710,486Small | 92.17 |
| Beit T'ShuvahEIN 77-0152646 | Health | CA | $10,481,748Mid-sized | 91.27 |
| Bender Jewish Community Center of Greater WashingtonEIN 53-0205921 | Human Services | MD | $14,681,556Large | 92.74 |
| Berkeley Repertory TheatreEIN 94-1679756 | Arts, Culture, Humanities | CA | $20,346,600Large | 94.42 |
| Bermuda Institute of Ocean SciencesEIN 06-0706038 | Research and Public Policy | NY | $15,876,165Large | 94.04 |
| Bethel Bible VillageEIN 62-6019872 | Human Services | TN | $2,186,364Small | 92.20 |
| Bethesda MissionEIN 23-1389397 | Human Services | PA | $7,449,308Mid-sized | 90.71 |
| Bethesda-Chevy Chase Rescue SquadEIN 52-0583872 | Human Services | MD | $1,992,723Small | 90.71 |
| Better BasicsEIN 63-1106040 | Education | AL | $1,385,218Small | 91.36 |
| Better Government AssociationEIN 36-0802950 | Human and Civil Rights | IL | $3,079,240Small | 96.89 |
| Beyond BordersEIN 23-2713126 | International | DC | $1,960,030Small | 92.90 |
| Beyond CeliacEIN 90-0108854 | Health | PA | $1,403,993Small | 92.38 |
| Beyond HousingEIN 51-0179471 | Community Development | MO | $10,959,490Mid-sized | 92.20 |
| Beyond PesticidesEIN 52-1360541 | Environment | DC | $1,025,719Small | 90.35 |
| Bibles For The WorldEIN 36-2434228 | Religion | CO | $2,718,446Small | 94.86 |
| Big Brothers Big Sisters Independence RegionEIN 23-1352034 | Human Services | PA | $6,865,078Mid-sized | 90.26 |
| Big Brothers Big Sisters of Greater PittsburghEIN 25-6074707 | Human Services | PA | $1,920,113Small | 90.20 |
| Big Brothers Big Sisters of KentuckianaEIN 61-6057856 | Human Services | KY | $2,098,963Small | 93.57 |
| Big Brothers Big Sisters of Massachusetts BayEIN 04-2074462 | Human Services | MA | $6,894,306Mid-sized | 91.06 |
| Big Brothers Big Sisters of Metropolitan ChicagoEIN 36-2681212 | Human Services | IL | $4,638,926Mid-sized | 90.64 |
| Big Brothers Big Sisters of MiamiEIN 59-6166904 | Human Services | FL | $4,912,755Mid-sized | 91.93 |
| Big Brothers Big Sisters of Orange CountyEIN 95-1992702 | Human Services | CA | $5,321,640Mid-sized | 91.77 |
| Big Brothers Big Sisters of Puget SoundEIN 91-0673185 | Human Services | WA | $2,282,947Small | 91.64 |
| Big Brothers Big Sisters of San Diego CountyEIN 95-2151526 | Human Services | CA | $2,822,000Small | 90.97 |
| Big Brothers Big Sisters of the MidlandsEIN 47-0466144 | Human Services | NE | $2,318,385Small | 91.49 |
| Big Oak RanchEIN 23-7413017 | Human Services | AL | $8,513,520Mid-sized | 94.90 |
| Big Shoulders FundEIN 36-3490557 | Education | IL | $18,807,655Large | 98.64 |
| Bigelow Laboratory for Ocean SciencesEIN 01-6006001 | Research and Public Policy | ME | $12,705,375Mid-sized | 96.66 |
| Bike Works SeattleEIN 91-1753062 | Human Services | WA | $1,514,495Small | 90.62 |
| Bill Glass Behind the WallsEIN 75-2733954 | Religion | TX | $2,692,093Small | 95.08 |
| Birch Community ServicesEIN 93-1186020 | Human Services | OR | $15,057,816Large | 92.24 |
| Birmingham ZooEIN 62-1231591 | Animals | AL | $11,471,890Mid-sized | 93.98 |
| Birthright Israel FoundationEIN 13-4092050 | Education | NY | $98,592,432Large | 90.74 |
| Bivona Child Advocacy CenterEIN 03-0519569 | Human Services | NY | $1,571,580Small | 94.34 |
| Black Mountain Home for Children, Youth & FamiliesEIN 56-0538018 | Human Services | NC | $3,825,147Mid-sized | 93.89 |
| Bladder Cancer Advocacy NetworkEIN 20-2897110 | Health | MD | $2,104,302Small | 94.88 |
| Blessings in A BackpackEIN 26-1964620 | Human Services | KY | $9,541,649Mid-sized | 92.20 |
| Blind Children's CenterEIN 95-1656369 | Human Services | CA | $3,528,570Mid-sized | 94.26 |
| Blind Children's Learning CenterEIN 95-6097023 | Education | CA | $2,816,982Small | 94.51 |
| BlinkNow FoundationEIN 26-0819262 | International | NJ | $2,388,119Small | 97.84 |
| Blue Mountain Humane SocietyEIN 91-0828499 | Animals | WA | $1,066,237Small | 96.82 |
| Blue Ridge Area Food BankEIN 52-1202644 | Human Services | VA | $47,554,040Large | 94.26 |
| Blue Ridge ConservancyEIN 58-2502695 | Environment | NC | $5,516,928Mid-sized | 100.00 |
| Blue Star FamiliesEIN 80-0369895 | Human Services | CA | $4,060,299Mid-sized | 95.13 |
| Bnai Zion FoundationEIN 13-2572288 | International | NY | $4,004,928Mid-sized | 95.79 |
| Bo's PlaceEIN 76-0326979 | Human Services | TX | $2,031,638Small | 91.94 |
| Boca Helping HandsEIN 31-1713631 | Human Services | FL | $5,988,542Mid-sized | 93.11 |
| Boch CenterEIN 51-0197209 | Arts, Culture, Humanities | MA | $33,264,866Large | 91.98 |
| Bonnie J. Addario Lung Cancer FoundationEIN 20-4417327 | Health | CA | $4,708,201Mid-sized | 94.42 |
| Books For AfricaEIN 41-1627391 | International | MN | $36,258,346Large | 100.00 |
| Boothbay Region YMCAEIN 01-0237912 | Human Services | ME | $2,780,834Small | 94.85 |
| Boston Chinatown Neighborhood CenterEIN 23-7209691 | Human Services | MA | $5,315,258Mid-sized | 94.22 |
| Bottom LineEIN 04-3351427 | Education | MA | $11,646,639Mid-sized | 91.49 |
| Boulder County AIDS ProjectEIN 74-2442032 | Health | CO | $1,307,925Small | 92.97 |
| Boulder Jewish Community CenterEIN 84-1322996 | Human Services | CO | $4,675,737Mid-sized | 92.19 |
| Boy Scouts of America Catalina CouncilEIN 86-0107516 | Human Services | AZ | $1,906,585Small | 92.56 |
| Boy Scouts of America Sam Houston Area CouncilEIN 76-0239833 | Human Services | TX | $13,580,295Large | 93.80 |
| Boy Scouts of America, Atlanta Area CouncilEIN 58-0566122 | Human Services | GA | $12,466,178Mid-sized | 90.69 |