| Bang on a CanEIN 13-3392963 | Arts, Culture, Humanities | NY | $2,167,366Small | 81.29 |
| Bangor Humane SocietyEIN 01-0215910 | Animals | ME | $1,221,051Small | 81.96 |
| Baptist Children's Homes of North CarolinaEIN 56-0547499 | Human Services | NC | $25,600,894Large | 96.21 |
| Baptist Medical & Dental Mission InternationalEIN 64-0811705 | International | MS | $14,124,395Large | 93.34 |
| Barbara Bush Foundation for Family LiteracyEIN 26-0587238 | Education | FL | $12,908,198Mid-sized | 93.64 |
| Barnabas AidEIN 16-1711227 | Religion | VA | $3,052,367Small | 83.84 |
| Barnabas CenterEIN 59-2920275 | Human Services | FL | $3,364,655Small | 98.23 |
| Barnabas FoundationEIN 36-2904503 | Community Development | IL | $67,443,319Large | 91.36 |
| Barrington Stage CompanyEIN 04-3263298 | Arts, Culture, Humanities | MA | $4,708,940Mid-sized | 90.28 |
| Bartlesville Regional United WayEIN 23-7041295 | Community Development | OK | $2,299,800Small | 84.95 |
| Basic FundEIN 94-3290699 | Education | CA | $6,260,003Mid-sized | 91.36 |
| Basic GospelEIN 75-1564364 | Religion | TX | $1,089,851Small | 84.29 |
| Basic Rights Education FundEIN 93-1266613 | Human and Civil Rights | OR | $912,691Small | 83.70 |
| Bat Conservation InternationalEIN 74-2553144 | Animals | VA | $4,795,652Mid-sized | 88.68 |
| Baton Rouge Area FoundationEIN 72-6030391 | Community Development | LA | $39,996,274Large | 93.08 |
| 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 |
| Bay Area Rescue MissionEIN 94-6124054 | Human Services | CA | $9,971,930Mid-sized | 80.28 |
| Bay Chamber ConcertsEIN 01-6023519 | Arts, Culture, Humanities | ME | $993,149Small | 76.75 |
| Bay Cliff Health CampEIN 38-6000167 | Health | MI | $2,035,747Small | 76.91 |
| Bayith LepleitotEIN 11-2213686 | Human Services | NY | $3,965,586Mid-sized | 61.20 |
| BBYOEIN 31-1794932 | Religion | DC | $31,255,555Large | 85.97 |
| Be the Change Inc.EIN 26-0402451 | Research and Public Policy | MA | $8,004,215Mid-sized | 79.38 |
| Be The Match FoundationEIN 41-1704734 | Health | MN | $12,699,664Mid-sized | 87.89 |
| Beacon AcademyEIN 73-1710051 | Education | MA | $1,710,486Small | 92.17 |
| Bean's CafeEIN 92-0072522 | Human Services | AK | $2,577,325Small | 87.89 |
| Bear Necessities Pediatric Cancer FoundationEIN 36-3874655 | Health | IL | $1,914,328Small | 81.66 |
| BEE WorldEIN 74-2752161 | Religion | CO | $3,781,056Mid-sized | 79.83 |
| Behring Global Educational FoundationEIN 94-3353881 | International | CA | $11,003,353Mid-sized | 73.65 |
| Beit T'ShuvahEIN 77-0152646 | Health | CA | $10,481,748Mid-sized | 91.27 |
| BELL (Building Educated Leaders for Life)EIN 04-3182053 | Education | MA | $16,560,910Large | 88.19 |
| Bemis Center for Contemporary ArtsEIN 47-0653927 | Arts, Culture, Humanities | NE | $1,699,910Small | 77.37 |
| Bend the Arc: A Jewish Partnership for JusticeEIN 52-1332694 | Human and Civil Rights | NY | $3,103,664Small | 77.70 |
| Bender Jewish Community Center of Greater WashingtonEIN 53-0205921 | Human Services | MD | $14,681,556Large | 92.74 |
| BenevillaEIN 86-0404687 | Human Services | AZ | $6,396,221Mid-sized | 89.35 |
| Benjamin Rose Institute on AgingEIN 34-0714482 | Human Services | OH | $11,049,876Mid-sized | 80.90 |
| Bergen County's United WayEIN 22-6028959 | Community Development | NJ | $17,834,641Large | 89.86 |
| Berkeley Public Library FoundationEIN 94-3280180 | Arts, Culture, Humanities | CA | $341,709Small | 84.26 |
| Berkeley Repertory TheatreEIN 94-1679756 | Arts, Culture, Humanities | CA | $20,346,600Large | 94.42 |
| Berkeley Symphony OrchestraEIN 23-7219508 | Arts, Culture, Humanities | CA | $1,202,472Small | 75.81 |
| Berkshire Humane SocietyEIN 04-3148018 | Animals | MA | $1,460,649Small | 86.63 |
| Berkshire MuseumEIN 04-2103878 | Arts, Culture, Humanities | MA | $3,117,319Small | 86.85 |
| Berkshire United WayEIN 04-2104841 | Community Development | MA | $2,754,541Small | 83.91 |
| Bermuda Institute of Ocean SciencesEIN 06-0706038 | Research and Public Policy | NY | $15,876,165Large | 94.04 |
| Bernheim Arboretum and Research ForestEIN 61-0444651 | Environment | KY | $3,094,982Small | 87.30 |
| Best Buddies InternationalEIN 52-1614576 | Human Services | FL | $26,289,255Large | 87.85 |
| BestPrepEIN 41-1265355 | Education | MN | $1,538,322Small | 87.56 |
| Bet TzedekEIN 23-7304205 | Human and Civil Rights | CA | $7,647,552Mid-sized | 88.25 |
| Bethel Bible VillageEIN 62-6019872 | Human Services | TN | $2,186,364Small | 92.20 |
| Bethesda AcademyEIN 58-0637013 | Education | GA | $3,955,168Mid-sized | 86.29 |
| Bethesda Lutheran CommunitiesEIN 39-0806446 | Human Services | WI | $150,208,423Large | 84.39 |
| 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 |
| Better World FundEIN 58-2366765 | International | DC | $5,346,277Mid-sized | 78.51 |
| Beverly BootstrapEIN 04-3254507 | Human Services | MA | $2,781,956Small | 88.49 |
| 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 |