Unknown & Unclassified nonprofits in Oklahoma

Unknown & Unclassified nonprofits in Oklahoma. Browse 6,510 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.

Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.

Nonprofit profiles

  1. Naifa - Oklahoma Inc

    EIN 730956313 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  2. Nals Inc

    EIN 736105922 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  3. Nami of Tulsa Inc

    EIN 731351984 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  4. Nami of Washington County Inc

    EIN 731347894 · Headquarters: BARTLESVILLE, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  5. Nar-anon New Perspectives

    EIN 731547369 · Headquarters: BIXBY, OK, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  6. Narconon of Oklahoma Inc Dba Narconon Arrowhead

    EIN 731589280 · Headquarters: Canadian, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Narfe

    EIN 352330087 · Headquarters: McAlester, OK, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  8. Nat'l Org to End Pet Overpopulation Inc

    EIN 731247434 · Headquarters: LAWTON, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  9. Natc Mwr

    EIN 923457229 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  10. Natca Dod End

    EIN 992516564 · Headquarters: Enid, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. National Active and Retired Federal Employees Association

    EIN 237072274 · Headquarters: Okemah, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. National Active and Retired Federal Employees Association

    EIN 510250200 · Headquarters: Choctaw, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. National Active and Retired Federal Employees Association

    EIN 731332159 · Headquarters: Sand Springs, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. National Active and Retired Federal Employees Association

    EIN 731339504 · Headquarters: Sand Springs, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. National Active and Retired Federal Employees Association

    EIN 731358692 · Headquarters: Weatherford, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  16. National Active and Retired Federal Employees Association

    EIN 736100172 · Headquarters: Sand Springs, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. National Active and Retired Federal Employees Association

    EIN 736102592 · Headquarters: Norman, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. National Active and Retired Federal Employees Association

    EIN 736102673 · Headquarters: Sand Springs, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. National Active and Retired Federal Employees Association

    EIN 736102677 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. National Active and Retired Federal Employees Association

    EIN 736103190 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. National Active and Retired Federal Employees Association

    EIN 736103588 · Headquarters: Elgin, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. National Active and Retired Federal Employees Association

    EIN 736105495 · Headquarters: Sand Springs, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. National Active and Retired Federal Employees Association

    EIN 736108728 · Headquarters: Edmond, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. National Active and Retired Federal Employees Association

    EIN 736108730 · Headquarters: Sand Springs, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. National Active and Retired Federal Employees Association

    EIN 736111864 · Headquarters: Sand Springs, OK, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  26. National Active and Retired Federal Employees Association

    EIN 736111866 · Headquarters: Sand Springs, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  27. National Air Traffic Controllers Association

    EIN 262496628 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. National Air Traffic Controllers Association

    EIN 464507651 · Headquarters: Burns Flat, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. National Air Traffic Controllers Association

    EIN 731327409 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. National Air Traffic Controllers Association

    EIN 731327429 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. National Air Traffic Controllers Association

    EIN 731599615 · Headquarters: Wheatland, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. National Air Traffic Controllers Association

    EIN 731620185 · Headquarters: Ardmore, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. National Air Traffic Controllers Association

    EIN 814162859 · Headquarters: Bethany, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. National Air Traffic Controllers Association

    EIN 820750894 · Headquarters: Lawton, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. National Airtraffic Controllers Association

    EIN 731327596 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. National Alliance of School Crisis Responders Inc

    EIN 922896192 · Headquarters: Norman, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  37. National Ambucs Inc

    EIN 201687654 · Headquarters: OKLAHOMA CITY, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. National Ambucs Inc

    EIN 237438477 · Headquarters: OKLAHOMA CITY, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. National Ambucs Inc

    EIN 582213853 · Headquarters: Clinton, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. National Ambucs Inc

    EIN 582213958 · Headquarters: Enid, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. National Ambucs Inc

    EIN 731203934 · Headquarters: Duncan, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  42. National Ambucs Inc

    EIN 900360705 · Headquarters: Ponca City, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  43. National Ambucs Inc

    EIN 900548233 · Headquarters: KINGFISHER, OK, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  44. National Ambucs Inc

    EIN 900690650 · Headquarters: Tryon, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. National Ambucs Inc

    EIN 901116977 · Headquarters: Owasso, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. National Ambucs Inc

    EIN 911904181 · Headquarters: Woodward, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. National Ambucs Inc

    EIN 911906504 · Headquarters: Woodward, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. National Assoc of FSA County Office

    EIN 736102610 · Headquarters: Laverne, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  49. National Assoc of Letter Carriers 458

    EIN 736102946 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. National Association for the Advancement of Colored People

    EIN 736112062 · Headquarters: Lawton, OK, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  51. National Association of Black Social Workers

    EIN 731155330 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  52. National Association of Early Child Hood Teacher Educators

    EIN 742884545 · Headquarters: Norman, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. National Association of Educational Procurement Inc

    EIN 113161518 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. National Association of Health Coordinators

    EIN 541576057 · Headquarters: Warr Acres, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. National Association of Industrial & Office Prop T

    EIN 731239241 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. National Association of Insurance Women

    EIN 736119874 · Headquarters: Enid, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. National Association of Legal Assistants Inc

    EIN 730977884 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. National Association of Letter Carrier Auxiliary of USA

    EIN 900420999 · Headquarters: Broken Arrow, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. National Association of Letter Carriers

    EIN 736102662 · Headquarters: Muskogee, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. National Association of Letter Carriers

    EIN 736112151 · Headquarters: ENID, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. National Association of Letter Carriers

    EIN 736112152 · Headquarters: McLoud, OK, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  62. National Association of Letter Carriers

    EIN 736112153 · Headquarters: Lawton, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. National Association of Letter Carriers

    EIN 736112163 · Headquarters: MANGUM, OK, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  64. National Association of Letter Carriers 1358 Oil Capital Branch

    EIN 736101770 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  65. National Association of Letter Carriers Auxiliary of USA

    EIN 900420998 · Headquarters: OKLAHOMA CITY, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. National Association of Letter Carriers of the United States

    EIN 736112123 · Headquarters: Ardmore, OK, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  67. National Association of Professional Mortgage Women

    EIN 731210186 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  68. National Association of Retired & Veteran Railway Employees

    EIN 363855363 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. National Association of Retired & Veteran Railway Employees

    EIN 731148462 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. National Association of Retired & Veteran Railway Employees

    EIN 731235125 · Headquarters: Shawnee, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. National Association of Retired & Veteran Railway Employees

    EIN 731384864 · Headquarters: El Reno, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. National Association of Retired & Veteran Railway Employees

    EIN 731387304 · Headquarters: Broken Arrow, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. National Association of Retired & Veteran Railway Employees

    EIN 731615488 · Headquarters: Purcell, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. National Association of Retired Federal Employees

    EIN 113810520 · Headquarters: TULSA, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. National Association of the Remodeling Industry

    EIN 731291850 · Headquarters: OKLAHOMA CITY, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. National Association of Women in Construction

    EIN 736103418 · Headquarters: Owasso, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. National Association of Women in Construction Oklahoma City Chap383

    EIN 352598931 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. National Black Nurses Association Inc

    EIN 272281273 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. National Black Nurses Association Inc

    EIN 823773848 · Headquarters: Bethany, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  80. National Coalition of Federal Aviation Employees W-disabilities

    EIN 731450131 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  81. National Conference of State Human Services Financ

    EIN 581583134 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  82. National Council of State Agencies for T

    EIN 237213574 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. National Council on Family Relations

    EIN 452610225 · Headquarters: Edmond, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. National Council on Family Relations

    EIN 930825864 · Headquarters: Edmond, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. National Cowboy and Western Heritage Museum

    EIN 300341029 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  86. National Electrical Contractors Assn Eastern OK Chapter

    EIN 730554232 · Headquarters: Broken Arrow, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. National Exchange Club

    EIN 237107052 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  88. National Exchange Club

    EIN 237261703 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. National Exchange Club

    EIN 311170345 · Headquarters: MUSKOGEE, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  90. National Exchange Club

    EIN 736111512 · Headquarters: muskogee, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. National Federation of Music Clubs

    EIN 271634118 · Headquarters: POTEAU, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. National Federation of the Blind of Oklahoma Inc

    EIN 731375679 · Headquarters: Warr Acres, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. National Fellowship of Associate Members & Local Pastors of Umc

    EIN 383101488 · Headquarters: LAVERNE, OK, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  94. National Football Foundation and College Hall of Fame Inc

    EIN 731416433 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  95. National Guard Association of Oklahoma Inc

    EIN 730763045 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. National Hbpa Inc Trao

    EIN 731421672 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  97. National Headquarters of the National Society of Scabbard and B

    EIN 350991684 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. National Huguenot Society

    EIN 521861632 · Headquarters: Ponca City, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. National Kappa Kappa Iota Alpha State

    EIN 365114545 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. National Kappa Kappa Iota Inc

    EIN 208807771 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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