| Friends of the National ArboretumEIN 52-1257712 | Environment | DC | $1,291,668Small | 92.93 |
| German Marshall Fund of the USEIN 52-0954751 | International | DC | $26,863,805Large | 81.38 |
| Global Alliance for Improved NutritionEIN 98-0404435 | International | DC | $46,969,174Large | 81.96 |
| Global Foundation for Democracy and DevelopmentEIN 46-0485203 | International | DC | $1,680,326Small | 72.97 |
| Global Fund for ChildrenEIN 56-1834887 | International | DC | $6,244,625Mid-sized | 85.68 |
| GlobalGivingEIN 30-0108263 | International | DC | $47,048,596Large | 98.23 |
| Government Accountability ProjectEIN 52-1343924 | Human and Civil Rights | DC | $2,396,423Small | 87.63 |
| Grameen Foundation USAEIN 73-1502797 | International | DC | $14,220,186Large | 82.53 |
| Greater Washington Community FoundationEIN 23-7343119 | Community Development | DC | $87,920,424Large | 92.38 |
| Green AmericaEIN 52-1660746 | Environment | DC | $3,924,265Mid-sized | 88.87 |
| Greenpeace FundEIN 95-3313195 | Environment | DC | $19,137,869Large | 92.38 |
| Group of ThirtyEIN 13-2966004 | International | DC | $646,432Small | 85.35 |
| Habitat for Humanity of Washington, D.C.EIN 52-1589700 | Community Development | DC | $4,338,753Mid-sized | 91.16 |
| Hemophilia Federation of AmericaEIN 72-1282316 | Health | DC | $3,736,967Mid-sized | 94.69 |
| Higher AchievementEIN 52-1383374 | Education | DC | $10,174,709Mid-sized | 88.67 |
| Hillel: The Foundation for Jewish Campus LifeEIN 52-1844823 | Religion | DC | $44,307,034Large | 86.43 |
| Hindu American FoundationEIN 68-0551525 | Religion | DC | $1,303,188Small | 87.55 |
| Hope Street GroupEIN 45-0497577 | Research and Public Policy | DC | $4,944,604Mid-sized | 80.75 |
| House of Ruth, Washington, D.C.EIN 52-1054102 | Human Services | DC | $8,309,920Mid-sized | 89.02 |
| Hudson InstituteEIN 13-1945157 | International | DC | $14,882,370Large | 91.87 |
| Human Rights Campaign FoundationEIN 52-1481896 | Human and Civil Rights | DC | $16,850,495Large | 84.29 |
| Humane Rescue AllianceEIN 53-0219724 | Animals | DC | $12,721,085Mid-sized | 90.36 |
| Humane Society InternationalEIN 52-1769464 | Animals | DC | $14,265,429Large | 87.97 |
| IMA World HealthEIN 52-2112460 | International | DC | $97,151,816Large | 82.32 |
| Initiative for Global DevelopmentEIN 20-8003146 | International | DC | $1,036,574Small | 74.91 |
| Institute for America's FutureEIN 52-1971942 | Research and Public Policy | DC | $2,915,846Small | 83.56 |
| Institute for Energy ResearchEIN 76-0149778 | Research and Public Policy | DC | $1,666,571Small | 89.48 |
| Institute for Local Self-RelianceEIN 23-7394104 | Research and Public Policy | DC | $1,525,548Small | 91.75 |
| Institute for Policy StudiesEIN 52-0788947 | Research and Public Policy | DC | $3,889,771Mid-sized | 94.21 |
| Institute for the Study of WarEIN 26-0273675 | Research and Public Policy | DC | $1,843,667Small | 81.77 |
| Institute for Women's Policy ResearchEIN 52-1549572 | Research and Public Policy | DC | $3,176,103Small | 86.79 |
| Institute on Taxation and Economic PolicyEIN 04-2688165 | Research and Public Policy | DC | $1,804,899Small | 93.91 |
| InterActionEIN 13-3287064 | International | DC | $9,733,199Mid-sized | 91.01 |
| International Campaign for TibetEIN 52-1570071 | International | DC | $3,169,181Small | 87.16 |
| International Center for JournalistsEIN 11-2724905 | International | DC | $12,304,327Mid-sized | 97.75 |
| International Center for Research on WomenEIN 52-1081455 | International | DC | $12,380,625Mid-sized | 83.72 |
| International Christian ConcernEIN 52-1942990 | Religion | DC | $2,483,260Small | 93.31 |
| International Churchill SocietyEIN 02-0482584 | Arts, Culture, Humanities | DC | $947,322Small | 75.26 |
| International Conservation Caucus FoundationEIN 83-0449176 | Environment | DC | $1,401,209Small | 77.40 |
| International Justice MissionEIN 54-1722887 | International | DC | $64,086,117Large | 87.44 |
| Invisible ChildrenEIN 54-2164338 | International | DC | $1,622,588Small | 79.04 |
| Iona Senior ServicesEIN 52-1039553 | Human Services | DC | $4,589,586Mid-sized | 94.78 |
| Island PressEIN 94-2578166 | Environment | DC | $4,526,796Mid-sized | 89.27 |
| J Street Education FundEIN 20-2777557 | International | DC | $6,029,203Mid-sized | 86.45 |
| Jamestown FoundationEIN 36-3266722 | International | DC | $1,383,854Small | 89.73 |
| Jewish Institute for National Security of AmericaEIN 52-1233683 | International | DC | $3,816,014Mid-sized | 85.68 |
| Jewish Women InternationalEIN 52-6040461 | Human and Civil Rights | DC | $1,869,986Small | 82.77 |
| Jobs with JusticeEIN 52-1865575 | Human and Civil Rights | DC | $3,811,737Mid-sized | 91.91 |
| Jubilee HousingEIN 52-0986261 | Human Services | DC | $3,797,228Mid-sized | 82.90 |
| Judge David L. Bazelon Center for Mental Health LawEIN 23-7268143 | Human and Civil Rights | DC | $2,321,749Small | 88.22 |
| Judicial WatchEIN 52-1885088 | Human and Civil Rights | DC | $32,128,134Large | 76.96 |
| Junior Achievement of Greater WashingtonEIN 54-0788947 | Education | DC | $3,994,908Mid-sized | 89.92 |
| Just AssociatesEIN 06-1597668 | International | DC | $3,052,770Small | 90.86 |
| Justice in AgingEIN 95-3132674 | Human and Civil Rights | DC | $3,016,588Small | 99.51 |
| KaBOOM!EIN 52-1970904 | Community Development | DC | $23,776,884Large | 86.93 |
| Land Trust AllianceEIN 04-2751357 | Environment | DC | $15,111,306Large | 90.85 |
| Lawyers' Committee for Civil Rights Under LawEIN 52-0799246 | Human and Civil Rights | DC | $7,241,908Mid-sized | 87.31 |
| Leadership Conference Education FundEIN 23-7026895 | Human and Civil Rights | DC | $11,075,584Mid-sized | 90.72 |
| Leadership RoundtableEIN 54-2174467 | Religion | DC | $2,362,890Small | 80.46 |
| League of American BicyclistsEIN 36-6206225 | Research and Public Policy | DC | $1,587,429Small | 81.45 |