| National Family Planning and Reproductive Health Association | 5235288 | 2022-09-07 | Active | WASHINGTON |
| NATIONAL FILM PRESERVATION FOUNDATION | 2073556 | 1998-11-24 | Active | WASHINGTON |
| NATIONAL FISH AND WILDLIFE FOUNDATION | 3345343 | 2010-12-06 | Active | WASHINGTON |
| NATIONAL FOOD PROCESSORS ASSOCIATION | 0117061 | 1925-12-31 | Dissolved | WASHINGTON |
| NATIONAL FOSTER YOUTH INSTITUTE | 3620110 | 2013-11-15 | Active | WASHINGTON |
| NATIONAL GEOGRAPHIC PARTNERS, LLC | 201604710043 | 2016-02-12 | Active | WASHINGTON |
| NATIONAL GEOGRAPHIC PICTURES, LLC | 200909110274 | 2009-03-26 | Dissolved | WASHINGTON |
| NATIONAL GEOGRAPHIC SOCIETY | 1966196 | 1996-04-05 | Active | WASHINGTON |
| NATIONAL GOVERNORS ASSOCIATION CENTER FOR BEST PRACTICES | 1625084 | 1988-10-19 | Active | WASHINGTON |
| NATIONAL HOME EQUITY MORTGAGE ASSOCIATION, INC. | 1864271 | 1993-08-06 | Dissolved | WASHINGTON |
| NATIONAL HOUSING PARTNERSHIP REALTY FUND I | 198729900020 | 1987-10-19 | Dissolved | WASHINGTON |
| NATIONAL HOUSING PARTNERSHIP REALTY FUND TWO | 198729900026 | 1987-10-19 | Active | WASHINGTON |
| NATIONAL HOUSING TRUST | 1622396 | 1988-08-23 | Revoked | WASHINGTON |
| NATIONAL HOUSING TRUST COMMUNITY DEVELOPMENT FUND | 5779642 | 2023-06-13 | Active | WASHINGTON |
| NATIONAL HYDROGEN ASSOCIATION | 2341998 | 2001-04-17 | Dissolved | WASHINGTON |
| National Immigration Forum, Inc. | 5696228 | 2023-05-17 | Active | WASHINGTON |
| NATIONAL INDIAN HEALTH BOARD | 4641119 | 2020-09-09 | Revoked | WASHINGTON |
| National Institute of Building Sciences | B20250380673 | 2025-11-12 | Dissolved | WASHINGTON |
| NATIONAL INSTITUTE OF BUILDING SCIENCES | 3863144 | 2016-01-11 | Dissolved | WASHINGTON |
| NATIONAL JAPANESE AMERICAN MEMORIAL FOUNDATION | 1473956 | 1989-12-21 | Active | WASHINGTON |
| NATIONAL JOURNAL GROUP LLC | 201915010277 | 2019-05-23 | Revoked | WASHINGTON |
| NATIONAL JOURNAL GROUP, INC. | 2177270 | 1999-09-24 | Dissolved | WASHINGTON |
| NATIONAL JOURNAL GROUP, INC. | 3793495 | 2015-06-01 | Dissolved | WASHINGTON |
| NATIONAL LEAGUE OF CONSERVATION VOTERS, INC. | 3265230 | 2009-11-23 | Revoked | WASHINGTON |
| NATIONAL LGBTQ TASK FORCE | 3416518 | 2011-09-12 | Active | WASHINGTON |
| NATIONAL LGBTQ TASK FORCE ACTION FUND, INC. | 3477708 | 2012-04-27 | Active | WASHINGTON |
| NATIONAL MAIN STREET CENTER, INC. | 3941576 | 2016-08-31 | Active | WASHINGTON |
| NATIONAL MARINE MANUFACTURERS ASSOCIATION, INC. | 6358774 | 2024-08-21 | Active | WASHINGTON |
| NATIONAL MEDICAL UNDERWRITING RISK PURCHASING GROUP, INC. | 2136740 | 1999-04-14 | Revoked | WASHINGTON |
| NATIONAL MEDICAL WIRELESS BROADBAND ALLIANCE, LLC | 200928810007 | 2009-10-08 | Revoked | WASHINGTON |
| NATIONAL NETWORK TO END DOMESTIC VIOLENCE, INC. | 3697799 | 2014-07-28 | Active | WASHINGTON |
| NATIONAL NEWSPAPER CORPORATION | 1267902 | 1985-02-08 | Dissolved | WASHINGTON |
| National Organization for Women | 6144824 | 2024-03-14 | Active | WASHINGTON |
| NATIONAL ORGANIZATION FOR WOMEN FOUNDATION, INC. | 3385649 | 2011-03-25 | Active | WASHINGTON |
| National Organization on Disability | B20250360086 | 2025-10-28 | Active | WASHINGTON |
| NATIONAL ORGANIZATION ON FETAL ALCOHOL SYNDROME, INC. | 1954383 | 1995-11-22 | Dissolved | WASHINGTON |
| NATIONAL PARKS CONSERVATION ASSOCIATION | 2416725 | 2002-05-09 | Active | WASHINGTON |
| NATIONAL PARTNERSHIP FOR WOMEN & FAMILIES, INC. | 1879784 | 1993-12-21 | Active | WASHINGTON |
| NATIONAL PEACE CORPS ASSOCIATION | 4022028 | 2017-05-09 | Active | WASHINGTON |
| NATIONAL POLICY ANALYSTS, INC. | 0981306 | 1980-04-24 | Suspended | WASHINGTON |
| NATIONAL POLLUTION PREVENTION ROUNDTABLE | 3187763 | 2009-01-12 | Dissolved | WASHINGTON |
| NATIONAL PRIVATE DUTY ASSOCIATION, INC. | 3096917 | 2008-04-24 | Revoked | WASHINGTON |
| NATIONAL PROSTATE CANCER COALITION FUND, INC | 2220317 | 2000-01-19 | Revoked | WASHINGTON |
| NATIONAL PUBLIC RADIO, INC. | 1580744 | 1987-02-26 | Active | WASHINGTON |
| NATIONAL REAL ESTATE ADVISORS, LLC | 201405610562 | 2014-02-20 | Active | WASHINGTON |
| NATIONAL REAL ESTATE DEVELOPMENT, LLC | 201405610566 | 2014-02-20 | Active | WASHINGTON |
| NATIONAL RESEARCH GROUP UNITED LLC | 201813710697 | 2018-05-08 | Dissolved | WASHINGTON |
| NATIONAL RIGHT TO LIFE COMMITTEE, INC. | 2747366 | 2005-04-25 | Revoked | WASHINGTON |
| NATIONAL SECURITY INDUSTRIAL ASSOCIATION | 0667210 | 1972-10-13 | Dissolved | WASHINGTON |
| NATIONAL SLEEP FOUNDATION | 1818781 | 1992-03-27 | Dissolved | WASHINGTON |