| 19,983 District of Columbia Tax-Exempt Organizations |
|
| Name | Address | Established | Total Income |
|---|
| Nutrients For Life Foundation | 425 3rd St Sw Ste 950, Washington, DC 20024-3230 | 2005-12 | $1,958,170 |
| Nutrition Art Music And Technology Therapy Inc, N A M T T | 5402 8th St Ne, Washington, DC 20011-6402 | 1997-12 | $1 |
| Nutrition Foundation Inc | 1126 16th St Nw, Washington, DC 20036-4804 | 1943-10 | $0 |
| Nw Saturday Academy | 7515 16th St Nw, Washington, DC 20012-1509 | 2014-11 | $0 |
| Nwannedinamba Association In The Americas | PO BOX 41503, Washington, DC 20018-0903 | 1986-10 | $37,554 |
| Nylf Foundation | 888 16th St Nw, Washington, DC 20006-4103 | 2000-12 | $2,268,227 |
| O L Pathy Family Foundation Inc | 3000 Connecticut Ave Nw Ste 406, Washington, DC 20008-2552 | 2011-08 | $368,439 |
| O Street Museum Foundation | 2020 O St Nw, Washington, DC 20036-5912 | 1997-10 | $110,101 |
| Oak Hill Cemetery Company | 3001 R St Nw, Washington, DC 20007-2923 | 1942-07 | $1,008,728 |
| Oak Hill Cemetery Preservation Foundation | 3001 R St Nw, Washington, DC 20007-2923 | 2003-07 | $171,978 |
| Oak Tree Media Conservatory Inc | 739 N Lakewood Ave, Baltimore, MD 21205-2639 | 2008-03 | $0 |
| Oakland Bbg 2 | 2020 K Street Nw 7th Floor, Washington, DC 20006 | | $0 |
| Oasis A Liberating Community Impowerment & Development Inc, Oasis C E D C | 1133 46th St Se, Washington, DC 20019-4946 | 2004-03 | $0 |
| Ob-Gyns For Womens Health | 409 12th Street Sw, Washington, DC 20024-2125 | 2002-03 | $670,483 |
| Objectivist Center Ltd | 1001 Conn Ave Nw Ste 715, Washington, DC 20036-5526 | 1990-06 | $1,181,693 |
| Oblate Missionary Society Inc | 391 Michigan Ave Ne, Washington, DC 20017-1516 | 1946-03 | $0 |
| Oblates Of St Francis De Sales | 1621 Otis St Ne, Wash, DC 20018-2321 | 1982-07 | $0 |
| Obrien-Larkin Charitable Remainder Unitrust | 2115 Wisconsin Ave Nw Ste 500, Washington, DC 20007-2214 | | $0 |
| Ocase Foundation Inc | Po Box 92762, Washington, DC 20090 | 2014-07 | $0 |
| Occ Alumni Association | 1155 15th Street Nw Suite 1101, Washington, DC 20005 | 2003-05 | $0 |
| Ocean Awareness Project Inc | PO BOX 19405, Washington, DC 20036-9405 | 2003-03 | $313,118 |
| Ocean Carrier Equipment Management Association Inc, Ocema | 11200 Rockville Pike Ste 415, N Bethesda, MD 20852-3159 | 2010-09 | $743,926 |
| Ocean Common Carrier Coalition | 1735 New York Ave Nw Ste 500, Washington, DC 20006-5221 | 1990-07 | $0 |
| Ocean Conservancy Inc | 1300 19th St Nw Ste 800, Washington, DC 20036-1653 | 1972-12 | $38,595,460 |
| Ocean Foundation | 1320 19th St Nw 5th Fl, Washington, DC 20036-1610 | 2002-05 | $5,264,763 |
| Ocean Stewards Institute | 750 9th Street Nw Suite 750, Washington, DC 20001 | 2010-12 | $0 |
| Oceana Advocacy Resources Inc | 1350 Connecticut Ave Nw 5th Floor, Washington, DC 20036 | 2001-12 | $22 |
| Oceana Inc | 1350 Connecticut Ave Nw Fl 5, Washington, DC 20036-1759 | 2000-01 | $53,394,858 |
| Octave Jules Romary Charitable Remainder Unitrust | 2115 Wisconsin Ave Nw Ste 500, Washington, DC 20007-2214 | | $0 |
| Odd Fellows Temple Independent Order Of The Odd Fellows Dc | Washington, DC 20004 | | $1,199,833 |
| Office And Professional Employees International Union | 80 8th Ave Ste 610, New York, NY 10011-7179 | 1946-04 | $15,556,602 |
| Office Of Management And Budget Employee Welfare Fund | 725 17th Street Nw Rm 9026 Neob, Washington, DC 20503 | 1995-03 | $0 |
| Office Of Naval Intelligence Chief Petty Officers Association, Onicpoa | 4251 Suitland Rd Code-Occ, Washington, DC 20395-0001 | 1999-07 | $0 |
| Office Of Naval Intelligence First Class Petty Officer Association | 4251 Suitland Rd Ste On1-235, Washington, DC 20395-0001 | 2006-03 | $0 |
| Offshore Wind Development Coalition Inc | 1130 Conn Ave Nw Ste 300, Washington, DC 20036-3981 | 2011-06 | $370,384 |
| Oge Corp | 10816 Town Center Blvd Ste 105, Dunkirk, MD 20754-2708 | 2014-08 | $1,260,385 |
| Oglala Lakota Legal Rights Fund Inc | 1803 Biltmore Nw, Washington, DC 20009-1962 | 1983-04 | $0 |
| Ohavim Bbg 418 | 2020 K Street Nw 7th Floor, Washington, DC 20006 | | $0 |
| Ohev Bbg | 2020 K Street Nw 7th Floor, Washington, DC 20006 | | $0 |
| Ohev Sholom-The National Synagogue | 1600 Jonquil St Nw, Washington, DC 20012-1108 | 2006-06 | $0 |
| Ohio Society Of Washington Dc | PO BOX 2070, Washington, DC 20013 | | $0 |
| Oil And Gas Accountability Project | 1612 K Street Nw, Washington, DC 20006-2802 | 2001-03 | $0 |
| Oil And Gas Educational Foundation Incorporated | 1120 G Street Nw Suite 900, Washington, DC 20005 | 1995-12 | $0 |
| Oil And Wine Ministries, Real Life Church | PO BOX 39217, Washington, DC 20016-9217 | 1984-08 | $0 |
| Oil Change International | 714 G Street Se Suite 202, Washington, DC 20003-2883 | 2006-02 | $789,798 |
| Oil Change Usa | 714 G Street Se Suite 202, Washington, DC 20003 | | $0 |
| Oil Investment Institute | PO BOX 8293, Washington, DC 20032-8293 | 1971-08 | $0 |
| Oilfield Waste Policy Institute | 1908 T St Nw Apt A, Washington, DC 20009-1276 | 2003-11 | $0 |
| Oklahoma State Society Of Washington Dc | 1301 U St Nw Apt 206, Washington, DC 20009-7943 | 2015-03 | $0 |
| Okwuato Development Union Inc | 3900 14th St Nw Apt 111, Washington, DC 20011-5447 | 1996-05 | $0 |
| Olangi Wosho Foundation Inc | 2130 24th Pl Ne, Washington, DC 20018-1402 | 1998-08 | $23,802 |
| Old Grand Theater Company | 1236 C St Se, Washington, DC 20003 | 2012-07 | $0 |
| Old Naval Hospital Foundation | 921 Pennsylvania Ave Se, Washington, DC 20003-2141 | 2003-08 | $775,724 |
| Old Umuahia Development Union North America | P O Box 29126, Washington, DC 20017 | 2002-10 | $0 |
| Old Way Baptist Church | 1335 Michigan Ave Ne, Washington, DC 20017-3830 | 2013-12 | $0 |
| Old Wulfrunians In America Inc | 1000 N West Street Suite 1200, Wilmington, DE 19801 | 2007-10 | $4,907 |
| Older Women's League Brooklyn Chapter | 2162 Gerritson Ave, Brooklyn, NY 11229 | 1982-05 | $162,302 |
| Olive Branch Inc | 4015 4th Street Nw, Washington, DC 20011 | 2001-02 | $0 |
| Oliveland Incorporated | 710 58th St Ne, Washington, DC 20019-7010 | 1997-03 | $0 |
| Oliver & Harriet Sockwell Foundation | 1685 Myrtle St Nw, Washington, DC 20012-1129 | 1991-06 | $113,031 |
| Olusegun Obasanjo Presidential Library Foundation In The U S, Ooplf Obasanjo Library Foundation | C/O Gwi 1700 K Street Nw Suite 430, Washington, DC 20006 | 2009-03 | $0 |
| Olympic Chess House | 4234 Grant St Ne, Washington, DC 20019-8009 | 2001-02 | $0 |
| Omega Alpha Alumni Association Of The Delta Phi Fraternity | 1602 Belmont St Nw Unit A, Washington, DC 20009 | 2003-04 | $0 |
| Omega Foundation | 3750 Oliver St Nw, Washington, DC 20015-2532 | 2003-01 | $48,056 |
| Omega Psi Phi Fraternity | 2400 Sixth St Nw, Washington, DC 20059 | 1953-01 | $0 |
| Omega Psi Phi Fraternity | Po Box 73364, Washington Dc, DC 20056 | 1967-02 | $0 |
| Omega Psi Phi Fraternity Delta Theta Chapter | 1515 Ogden St Nw Apt 636, Washington, DC 20010-1275 | 1970-05 | $0 |
| Omega Psi Phi Fraternity Inc Alpha Chapter | 2397 Sixth St Nw Po Box 115, Washington, DC 20059 | 1953-03 | $0 |
| Omega Psi Phi Fraternity, 501 Alpha Omega District 3 | PO BOX 90158, Washington, DC 20090-0158 | 1953-03 | $281,342 |
| Omega Psi Phi Fraternity, 98 Omicron Gamma District 3 | 1231 Harvard St Nw, Washington, DC 20009-5311 | 1953-01 | $0 |
| Omega Psi Phi Fraternity, Delta Theta Chapter | 1231 Harvard Street Nw, Washington Dc, DC 20009 | 1953-01 | $0 |
| Omicron Delta Epsilon Intl Honor Society In Economics Inc | American University 4000 Mass Ave Nw, Washington, DC 20016-8029 | 1974-01 | $0 |
| Omicron Delta Epsilon Intl Honor Society In Economics Inc | 37th And O Streets Nw, Washington, DC 20057 | 1974-01 | $0 |
| Omicron Delta Epsilon Intl Honor Society In Economics Inc | 1504 R St Nw, Washington, DC 20009 | 1974-01 | $0 |
| Omicron Delta Epsilon Intl Honor Society In Economics Inc, Alpha Of Dc George Washington Univ | 2121 I St Nw, Washington, DC 20052-0086 | 1974-01 | $0 |
| Omicron Delta Epsilon Intl Honor Society In Economics Inc, Beta Of Dc Howard University | 2400 6th St Nw Asbb321 Dept Of Econ, Washington, DC 20059-0001 | 1974-01 | $0 |
| Omicron Delta Epsilon Intl Honor Society In Economics Inc, Epsilon Of Dc University Of Dc | 5200 Connecticut Ave Nw, Washington, DC 20008 | 1974-01 | $0 |
| Omicron Eta Lambda Charitable Foundation | P O Box 70113, Washington, DC 20024 | 2001-07 | $0 |
| Omicron Kappa Upsilon Honorary Dental Society Supreme, Pi Pi | 600 W St Nw, Washington, DC 20059-1022 | 1972-10 | $0 |
| Omnigov Training Institute | 1100 Connecticut Avenue Nw, Washington, DC 20036-4101 | 1990-05 | $189,770 |
| On The Level Inc | 4119 Garrison St Nw, Washington, DC 20016-4223 | 2013-09 | $10,825 |
| On-Ramps To Careers | 3310 10th St Ne, Washington, DC 20017-3508 | 2014-07 | $0 |
| Once Is Enough | 1209 C St Ne Apt 1, Washington, DC 20002-6392 | 2004-04 | $0 |
| Once Upon A Prom | 5033 Tilden St Nw, Washington, DC 20016 | 2008-06 | $0 |
| Ondo Grammar School Old Students Association, Ogosa | PO BOX 92158, Washington, DC 20090-2158 | 1998-08 | $1,100 |
| Ondo Ritz Club | PO BOX 9345, Washington, DC 20005-0845 | 2003-07 | $3,000 |
| Ondo Ritz Club Non Profit | PO BOX 9345, Washington, DC 20005-0845 | 2004-03 | $6,450 |
| One Action | 1400 Eye Street Nw Ste 600, Washington, DC 20005-6517 | 2003-04 | $3,182,339 |
| One America Foundation | 501 Oneida Pl Nw, Washington, DC 20011-2038 | 2001-09 | $0 |
| One By One Foundation | 2020 Pennsylvania Ave Nw Ste 219, Washington, DC 20006-1811 | 1995-04 | $42,300 |
| One Common Unity Inc | 2437 15th St Nw, Washington, DC 20009-4101 | 2002-06 | $85,873 |
| One Economy Corporation | 1776 I St Nw Fl 9, Washington, DC 20006-3708 | 2000-10 | $23,800,348 |
| One For All Corporation | 5019 9th St Nw, Washington, DC 20011-3915 | 2003-11 | $0 |
| One Health Commission | PO BOX 972, Apex, NC 27502-0972 | 2010-01 | $134,974 |
| One In Ten | PO BOX 73133, Washington, DC 20056-3133 | 2013-03 | $85,016 |
| One Ministries Inc | PO BOX 26089, Washington, DC 20001-0089 | 1974-09 | $143,756 |
| One Night Only Inc | 1113 Chaplin Street Se, Washington, DC 20019 | 2012-07 | $0 |
| One Percent Coalition | 1501 M Street Nw 7th Floor, Washington, DC 20005 | 2006-03 | $0 |
| One Week To End Fistulas | PO BOX 33422, Washington, DC 20033-0422 | 2014-06 | $4,045 |
| One World Education | 1678 Oak St Nw, Washington Dc, DC 20010 | 2007-08 | $101,022 |
| One World Youth Project Inc | 1420 16th Street Nw, Washington, DC 20036 | 2014-09 | $0 |
| Oneworld United States | 1721 20th St Nw, Washington, DC 20009-1104 | 2005-07 | $0 |
| Onicha Amari Development Union Incorporated In The Americas | 437 Luray Place Nw, Washington, DC 20010 | 2009-06 | $10,710 |
| Online Lendier Alliance | PO BOX 320130, Alexandria, VA 22320-4130 | 2006-09 | $5,325,995 |
| Online News Association | 1111 N Capital Street Ne 6th Flo, Washington, DC 20002-7502 | 1999-09 | $2,172,334 |
| Ontario Lakers Inc | PO BOX 21720, Washington, DC 20009-9720 | 2001-09 | $0 |
| Opalack Foundation | 2813 Q St Nw, Washington, DC 20007-3073 | 2005-01 | $334,118 |
| Opeiu Welfare Trust Fund For Retirees Of National Bank Of, Beaurgard Gilles Te | 80 8th Ave Ste 610, New York, NY 10011-7179 | 1992-09 | $2,116 |
| Open Arms Housing Inc | 1527 Otis St Ne, Washington, DC 20017-3016 | 1998-05 | $0 |
| Open Arms Housing Inc | 57 O St Nw, Washington, DC 20001-1258 | 1998-05 | $460,322 |
| Open City Advocates | 4202 Benning Rd Ne, Washington, DC 20019-4540 | 2005-10 | $419,805 |
| Open Door Church Of God In Christ | 1916 Benning Rd Ne, Washington, DC 20002-4724 | 2014-11 | $0 |
| Open Door Ministries Inc | 1328 Lawrence St Ne, Washington, DC 20017-4029 | 2001-06 | $0 |
| Open Forum Foundation | 1732 V St Nw, Washington, DC 20009 | 2009-12 | $66,354 |
| Open Internet Coalition | 1330 Connecticut Ave Nw, Washington, DC 20036-1704 | 2009-03 | $215,000 |
| Open Park Project | 740 7th St Se, Washington, DC 20003-2739 | 2004-09 | $0 |
| Open Security Exchange | 5185 Macarthur Blvd Nw Suite 625, Washington, DC 20016-3341 | | $0 |
| Open Standards Consortium For Real Estate-Americas Inc | 2020 Pennsylvania Ave Nw Box 1024, Washington, DC 20006-1811 | 2004-08 | $823,555 |
| Open Theatre | 1725 17th St Nw Apt 404, Washington, DC 20009-2420 | 1988-01 | $0 |
| Openstreetmap Us Inc | 1714 14th Street Nw Rear Entrance, Washington, DC 20009 | | $0 |
| Opera Camerata Of Washington Dc Inc | PO BOX 58103, Washington, DC 20037-8103 | 1994-08 | $131,033 |
| Opera Lafayette | 10 4th St Ne, Washington, DC 20002-5930 | 1997-01 | $1,179,939 |
| Operating Engineers Certification Program, Attn Executive Director | 1125 17th Street Nw, Washington, DC 20036-4709 | 2009-03 | $680,054 |
| Operating Engineers Nationalcharity Fund | 1125 Seventeenth St Nw, Washington, DC 20036-4709 | 2008-04 | $1,295,145 |
| Operation Friendship International Inc | 801 Pennsylvania Ave Nw Ste 400, Washington, DC 20004-2615 | 1994-09 | $0 |
| Operation Heartbeat Inc | 2175 K Street Nw No 300, Washington, DC 20037 | 1995-12 | $23,484 |
| Operation Love Inc | 2520 10th St Ne Apt 19, Washington, DC 20018-1746 | 1996-05 | $0 |
| Operation Luz De Sol Incorporated | 1145 19th St Nw Ste 802, Washington, DC 20036-3700 | 1992-11 | $0 |
| Operation Mali Inc | 3151 Cherry Road Ne, Washington, DC 20018 | 2011-08 | $0 |
| Operation Respond Institute Inc | 401 Constitution Avenue Ne, Washington, DC 20002 | 1995-08 | $301,030 |
| Operation Restoration Inc | PO BOX 39217, Washington, DC 20016-9217 | 1993-10 | $17,661 |