| B'nai B'rith InternationalEIN 53-0179971 | International | DC | $7,934,468Mid-sized | 65.38 |
| Back on My FeetEIN 26-2109809 | Human Services | PA | $6,123,556Mid-sized | 80.51 |
| Back to the BibleEIN 47-0405317 | Religion | NE | $4,699,648Mid-sized | 75.53 |
| Back to the Bible FoundationEIN 47-6022615 | Religion | NE | $699,991Small | 72.38 |
| Back2Back MinistriesEIN 31-1468516 | International | OH | $9,940,199Mid-sized | 94.74 |
| Bainbridge Schools FoundationEIN 91-1427019 | Education | WA | $1,004,781Small | 74.56 |
| Baitulmaal AHEDEIN 20-0942434 | International | TX | $9,877,509Mid-sized | 92.92 |
| Bald Head Island ConservancyEIN 58-1574496 | Environment | NC | $1,355,042Small | 79.38 |
| Ballard Food BankEIN 91-1428805 | Human Services | WA | $3,535,111Mid-sized | 91.16 |
| Ballet HispánicoEIN 13-2685755 | Arts, Culture, Humanities | NY | $5,880,403Mid-sized | 92.38 |
| Ballet MemphisEIN 62-1018942 | Arts, Culture, Humanities | TN | $3,976,050Mid-sized | 81.46 |
| Ballet Tech FoundationEIN 13-2773475 | Arts, Culture, Humanities | NY | $3,421,242Small | 92.52 |
| Ballet WestEIN 87-0264274 | Arts, Culture, Humanities | UT | $13,193,667Mid-sized | 86.93 |
| BallotpediaEIN 20-8036372 | Human and Civil Rights | WI | $4,687,551Mid-sized | 86.51 |
| Baltimore & Ohio Railroad MuseumEIN 52-1535426 | Arts, Culture, Humanities | MD | $4,720,272Mid-sized | 86.35 |
| Baltimore Animal Rescue and Care ShelterEIN 86-1130456 | Animals | MD | $3,878,123Mid-sized | 87.25 |
| Baltimore ClayworksEIN 52-1409133 | Education | MD | $1,100,010Small | 75.88 |
| Baltimore Community FoundationEIN 23-7180620 | Community Development | MD | $29,684,832Large | 90.54 |
| Baltimore Humane SocietyEIN 52-0623165 | Animals | MD | $1,610,383Small | 85.88 |
| Baltimore Symphony OrchestraEIN 52-0629696 | Arts, Culture, Humanities | MD | $27,938,029Large | 80.71 |
| 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 |