| Book-It Repertory TheatreEIN 91-1514734 | Arts, Culture, Humanities | WA | $1,774,747Small | 72.36 |
| Books For AfricaEIN 41-1627391 | International | MN | $36,258,346Large | 100.00 |
| Boone and Crockett ClubEIN 81-0438290 | Animals | MT | $3,085,806Small | 85.24 |
| Boothbay Region YMCAEIN 01-0237912 | Human Services | ME | $2,780,834Small | 94.85 |
| Boreal Songbird InitiativeEIN 91-2158784 | Animals | WA | $3,500,164Mid-sized | 76.59 |
| Born Free USAEIN 94-6187633 | Animals | MD | $2,716,257Small | 88.05 |
| Boston After School & BeyondEIN 20-1308560 | Human Services | MA | $2,594,596Small | 89.86 |
| Boston Arts Academy FoundationEIN 04-3454898 | Education | MA | $2,074,682Small | 76.62 |
| Boston AthenæumEIN 04-2104852 | Arts, Culture, Humanities | MA | $7,978,842Mid-sized | 87.70 |
| Boston BalletEIN 04-2312734 | Arts, Culture, Humanities | MA | $34,959,006Large | 86.74 |
| Boston Bar FoundationEIN 04-6111344 | Human and Civil Rights | MA | $1,643,676Small | 85.63 |
| Boston Children's ChorusEIN 65-1188279 | Education | MA | $2,379,341Small | 77.65 |
| Boston Children's MuseumEIN 04-2103993 | Arts, Culture, Humanities | MA | $10,009,528Mid-sized | 89.89 |
| Boston Chinatown Neighborhood CenterEIN 23-7209691 | Human Services | MA | $5,315,258Mid-sized | 94.22 |
| Boston Harbor NowEIN 04-3268863 | Environment | MA | $2,524,291Small | 79.39 |
| Boston Landmarks OrchestraEIN 31-1750843 | Arts, Culture, Humanities | MA | $1,212,568Small | 86.17 |
| Boston Latin School AssociationEIN 04-6035973 | Education | MA | $5,178,794Mid-sized | 87.24 |
| Boston Lyric OperaEIN 04-2469627 | Arts, Culture, Humanities | MA | $7,961,986Mid-sized | 88.03 |
| Boston Neighborhood NetworkEIN 04-2784953 | Arts, Culture, Humanities | MA | $2,104,336Small | 83.30 |
| Boston Philharmonic OrchestraEIN 04-2678312 | Arts, Culture, Humanities | MA | $2,782,364Small | 83.51 |
| Boston Rescue MissionEIN 04-2104726 | Human Services | MA | $3,126,857Small | 88.37 |
| Boston Symphony OrchestraEIN 04-2103550 | Arts, Culture, Humanities | MA | $103,630,393Large | 84.74 |
| Botanical Research Institute of TexasEIN 75-2198196 | Research and Public Policy | TX | $5,266,139Mid-sized | 85.94 |
| 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 |
| Boulder Shelter for the HomelessEIN 84-1041149 | Human Services | CO | $2,476,170Small | 88.71 |
| Bowers MuseumEIN 33-0106161 | Arts, Culture, Humanities | CA | $5,365,378Mid-sized | 82.15 |
| Boy Scouts of AmericaEIN 25-0965214 | Human Services | PA | $6,991,409Mid-sized | 89.18 |
| Boy Scouts of America Blue Ridge CouncilEIN 57-0314427 | Human Services | SC | $2,243,186Small | 85.14 |
| Boy Scouts of America Cape Fear CouncilEIN 56-0529941 | Human Services | NC | $1,612,927Small | 76.74 |
| Boy Scouts of America Catalina CouncilEIN 86-0107516 | Human Services | AZ | $1,906,585Small | 92.56 |
| Boy Scouts of America Greater Cleveland CouncilEIN 34-0714322 | Human Services | OH | $3,627,058Mid-sized | 88.23 |
| Boy Scouts of America National CouncilEIN 22-1576300 | Human Services | TX | $307,700,980Large | 88.14 |
| Boy Scouts of America Ore-Ida CouncilEIN 82-0288020 | Human Services | ID | $1,944,782Small | 89.05 |
| Boy Scouts of America Pacific Harbors CouncilEIN 91-0564954 | Human Services | WA | $1,860,636Small | 83.62 |
| Boy Scouts of America Piedmont CouncilEIN 56-0529991 | Human Services | NC | $2,702,513Small | 71.55 |
| Boy Scouts of America Sam Houston Area CouncilEIN 76-0239833 | Human Services | TX | $13,580,295Large | 93.80 |
| Boy Scouts of America Sioux CouncilEIN 46-0224599 | Human Services | SD | $1,948,162Small | 87.25 |
| Boy Scouts of America Stonewall Jackson Area CouncilEIN 54-0506448 | Human Services | VA | $1,528,979Small | 86.31 |
| Boy Scouts of America, Alamo Area CouncilEIN 74-6079583 | Human Services | TX | $4,811,177Mid-sized | 87.10 |
| Boy Scouts of America, Andrew Jackson CouncilEIN 64-0303071 | Human Services | MS | $2,159,317Small | 85.05 |
| Boy Scouts of America, Atlanta Area CouncilEIN 58-0566122 | Human Services | GA | $12,466,178Mid-sized | 90.69 |
| Boy Scouts of America, Black Warrior CouncilEIN 63-0288816 | Human Services | AL | $1,172,250Small | 76.72 |
| Boy Scouts of America, Blackhawk Area CouncilEIN 36-2169127 | Human Services | IL | $2,304,214Small | 82.08 |
| Boy Scouts of America, Bucksin CouncilEIN 55-0357013 | Human Services | WV | $1,976,439Small | 85.19 |
| Boy Scouts of America, California Inland Empire CouncilEIN 95-1744350 | Human Services | CA | $2,843,783Small | 86.56 |
| Boy Scouts of America, Capitol Area CouncilEIN 74-1143057 | Human Services | TX | $6,866,572Mid-sized | 94.03 |
| Boy Scouts of America, Cascade Pacific CouncilEIN 93-0386792 | Human Services | OR | $7,650,867Mid-sized | 78.05 |
| Boy Scouts of America, Central Florida CouncilEIN 59-0624376 | Human Services | FL | $7,280,233Mid-sized | 89.31 |
| Boy Scouts of America, Central Georgia CouncilEIN 58-0633976 | Human Services | GA | $1,407,118Small | 89.24 |
| Boy Scouts of America, Central Minnesota CouncilEIN 41-0693845 | Human Services | MN | $1,312,153Small | 91.08 |
| Boy Scouts of America, Central North Carolina CouncilEIN 56-0532132 | Human Services | NC | $1,987,093Small | 75.44 |
| Boy Scouts of America, Chattahoochee CouncilEIN 58-0601576 | Human Services | GA | $1,600,164Small | 78.35 |
| Boy Scouts of America, Cherokee Area CouncilEIN 62-0475671 | Human Services | TN | $2,007,741Small | 84.48 |
| Boy Scouts of America, Chief Seattle CouncilEIN 91-0569878 | Human Services | WA | $7,056,423Mid-sized | 89.67 |
| Boy Scouts of America, Circle Ten CouncilEIN 75-0800615 | Human Services | TX | $16,741,048Large | 84.04 |
| Boy Scouts of America, Coastal Carolina CouncilEIN 57-0327870 | Human Services | SC | $1,586,419Small | 82.65 |
| Boy Scouts of America, Colonial Virginia CouncilEIN 54-0505994 | Human Services | VA | $751,986Small | 71.05 |
| Boy Scouts of America, Connecticut Yankee CouncilEIN 06-0646793 | Human Services | CT | $4,043,476Mid-sized | 85.02 |