| Business | Phone |
| American Security Council 1241 Pennsylvania Ave Se, Washington 20003 | (202) 546-5200 |
| Australian Koala Foundation 1712 Johnson Ave Nw # B, Washington 20009 | (202) 234-3890 |
| Banyan Tree Foundation 1919 Pennsylvania Ave Nw # 725, Washington 20006 | (202) 466-5905 |
| Black Patriots Foundation 729 15th St Nw # 500, Washington 20005 | (202) 452-1776 |
| Boyne Research Foundation 1656 Newton St Nw, Washington 20010 | (202) 319-7525 |
| Cafritz Foundation 1825 K St Nw, Washington 20006 | (202) 223-3100 |
| Centrists Org Inc 236 Massachusetts Ave Ne, Washington 20002 | (202) 546-4090 |
| Charles F Kettering Foundation 444 N Capitol St Nw # 434, Washington 20001 | (202) 393-4478 |
| Community Foundation 1201 15th St Nw, Washington 20005 | (202) 955-5890 |
| Council On Diplomacy-Internal 1467 Meridian Pl Nw, Washington 20010 | (202) 462-9686 |
| Culture Of Life Foundation Inc 1413 K St Nw # 1000, Washington 20005 | (202) 289-2500 |
| Drug Policy Foundation 4455 Connecticut Ave Nw, Washington 20008 | (202) 537-5005 |
| Esquel Group Foundation 1350 Connecticut Ave Nw, Washington 20036 | (202) 466-2988 |
| Martin Luther King Jr National 401 F St Nw, Washington 20001 | (202) 737-5420 |
| Foundation For Enterprise 2020 K St Nw # 400, Washington 20006 | (202) 530-8920 |
| Foundation For Nuclear Studies 523 7th St Se, Washington 20003 | (202) 544-1488 |
| Foundation For Research 1701 Q St Nw, Washington 20009 | (202) 462-2100 |
| Foundation-Democracy In Africa 1612 K St Nw # 1104, Washington 20006 | (202) 331-1333 |
| Fourth Freedom Forum 1875 Connecticut Ave Nw # 1012, Washington 20009 | (202) 393-5201 |
| Friedrich Naumann Foundation 1730 Rhode Island Ave Nw #1010, Washington 20036 | (202) 293-0954 |
| Fultz Foundation 1101 30th St Nw, Washington 20007 | (202) 625-4885 |
| Fund For American Studies 1706 New Hampshire Ave Nw, Washington 20009 | (202) 986-0384 |
| Fund For Future-Our Children 5101 Wisconsin Ave Nw, Washington 20016 | (202) 364-2606 |
| Gaea Foundation Inc 1611 Connecticut Ave Nw # 200, Washington 20009 | (202) 299-0460 |
| Gede Foundation 1825 I St Nw, Washington 20006 | (202) 833-2670 |
| Global Fund For Children 1101 14th St Nw # 910, Washington 20005 | (202) 331-9003 |
| Global Work-Ethic Fund 1523 16th St Nw, Washington 20036 | (202) 232-1600 |
| Grantmakers In Health 1100 Connecticut Ave Nw # 1200, Washington 20036 | (202) 453-8331 |
| Group Serve Foundation 1715 18th St Nw, Washington 20009 | (202) 462-5210 |
| H John Heinz Iii Ctr 1001 Pennsylvania Ave Nw, Washington 20004 | (202) 737-6307 |
| H S Lea Foundation 3534 Fulton St Nw, Washington 20007 | (202) 337-5448 |
| Heinrich Boell Foundation 1638 R St Nw # 120, Washington 20009 | (202) 462-7512 |
| Housing Research Foundation 1250 I St Nw # 901b, Washington 20005 | (202) 393-0448 |
| Hsc Foundation 1808 I St Nw, Washington 20006 | (202) 454-1222 |
| Humanities Council 925 U St Nw, Washington 20001 | (202) 387-8391 |
| Institute For Governance 2141 Wisconsin Ave Nw, Washington 20007 | (202) 338-1300 |
| Institute-Independent Edctn 3330 Upland Ter Nw, Washington 20015 | (202) 285-8197 |
| Inter American Bar Foundation 733 15th St Nw, Washington 20005 | (202) 783-6577 |
| International Development 1750 K St Nw # 450, Washington 20006 | (202) 723-7010 |
| International Women Judges 901 15th St Nw, Washington 20005 | (202) 354-3847 |
| Intl Fndation For Election Sys 1101 15th St Nw, Washington 20005 | (202) 828-8507 |
| Kuwait America Foundation 1120 G St Nw # 990, Washington 20005 | (202) 393-7580 |
| Landscape Architecture Fndtn 818 18th St Nw, Washington 20006 | (202) 331-7070 |
| Leonsis Foundations 401 9th St Nw, Washington 20004 | (202) 347-5320 |
| Mc Intosh Foundation 1730 M St Nw # 204, Washington 20036 | (202) 338-8055 |
| Nhf Historical Svc 1306 Dahlgren Ave Se, Washington 20374 | (202) 678-4311 |
| Schusterman Family Foundation 800 8th St Nw, Washington 20001 | (202) 289-7000 |
| Mfa 1510 H St Nw, Washington 20005 | (202) 783-7979 |
| Moriah Fund Inc 1634 I St Nw # 1000, Washington 20006 | (202) 783-8488 |
| National Bonsai Foundation Inc 3501 New York Ave Ne, Washington 20002 | (202) 396-3510 |
| National Foundation-Teaching 1990 M St Nw # 550, Washington 20036 | (202) 467-6383 |
| National Hispanic Fndtn-Arts 1010 Wisconsin Ave Nw # 650, Washington 20007 | (202) 298-8308 |
| National Juneteenth Observance 1100 15th St Nw, Washington 20005 | (202) 331-8864 |
| National Legal Ctr For-Public 1600 K St Nw # 800, Washington 20006 | (202) 466-9360 |
| National Maritime Heritage 236 Massachusetts Ave Ne # 410, Washington 20002 | (202) 547-1250 |
| National Security Caucus Fndtn 405 N St Sw, Washington 20024 | (202) 479-4580 |
| National Space Grant Fndtn 1200 H St Nw, Washington 20005 | (202) 682-3996 |
| National Trust Humanities 4823 Reservoir Rd Nw, Washington 20007 | (202) 965-0597 |
| Naval Undersea Museum Fndtn 901 M St Se, Washington 20374 | (202) 678-1950 |
| Network Education Fundation 1030 15th St Nw, Washington 20005 | (202) 682-1950 |
| One America Foundation 501 Oneida Pl Nw, Washington 20011 | (202) 291-0424 |
| Orr Associates Inc-Consultants 2801 M St Nw, Washington 20007 | (202) 338-6100 |
| Parren J Mitchell Foundation 1625 Massachusetts Ave Nw, Washington 20036 | (202) 319-1210 |
| Police Executive Research Frm 1120 Connecticut Ave Nw # 930, Washington 20036 | (202) 466-7820 |
| Progress & Freedom Foundation 1401 H St Nw, Washington 20005 | (202) 289-8928 |
| Project Judaica 1010 Wisconsin Ave Nw # 345, Washington 20007 | (202) 554-3600 |
| Project Judaica Foundation 900 2nd St Ne, Washington 20002 | (202) 371-0882 |
| Public Health Foundation 1300 L St Nw # 800, Washington 20005 | (202) 898-5600 |
| Public Health Policy Advisory 2021 K St Nw # 700, Washington 20006 | (202) 775-1110 |
| Rene Moawad Foundation 3231 P St Nw, Washington 20007 | (202) 338-3535 |
| Samberg Family Foundation 1730 M St Nw, Washington 20036 | (202) 775-4550 |
| Santos Family Foundation 900 17th St Nw # 900, Washington 20006 | (202) 833-2559 |
| Science Service 1719 N St Nw, Washington 20036 | (202) 785-2255 |
| Sea Forever Foundation-Maya 1851 9th St Nw, Washington 20001 | (202) 939-9080 |
| Selous Foundation 325 Pennsylvania Ave Se, Washington 20003 | (202) 547-6963 |
| Stuttering Foundation-America 5139 Klingle St Nw, Washington 20016 | (202) 363-3199 |
| Wallace Global Fund 1990 M St Nw # 250, Washington 20036 | (202) 452-1530 |
| Washington Aids Intl Fndtn 3224 16th St Nw, Washington 20010 | (202) 745-0111 |
| Washington Area Women's Fndtn 666 11th St Nw # 450, Washington 20001 | (202) 347-6770 |
| Us Israel Science Techknowlege 1130 17th St Nw, Washington 20036 | (202) 419-0430 |
| National Cnt For Housing & En 1156 15th St Nw # 510, Washington 20005 | (202) 822-4645 |
| United Nations Foundation 1225 Connecticut Ave Nw # 400, Washington 20036 | (202) 887-9040 |