Nonprofits in Oklahoma

Nonprofits in Oklahoma. Browse 25,638 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. American Chemical Society

    EIN 736095405 · Headquarters: Alva, OK, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  2. American Chemical Society

    EIN 736098473 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. American Chemical Society

    EIN 736103535 · Headquarters: Bartlesville, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. American Chemical Society

    EIN 736103889 · Headquarters: Ponca City, OK, US · Community Improvement & Capacity Building · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  5. American Chemical Society

    EIN 871858708 · Headquarters: Alva, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. American Choral Directors Assoc

    EIN 620695676 · Headquarters: OKLAHOMA CITY, OK, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. American Christian Fiction Writers Inc

    EIN 463121030 · Headquarters: Stillwater, OK, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. American Christian Fiction Writers Inc

    EIN 463234513 · Headquarters: Tulsa, OK, US · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  9. American Civil Liberties

    EIN 730780616 · Headquarters: Oklahoma City, OK, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ

  10. American Civil Liberties Union of Oklahoma Foundation Inc

    EIN 731003205 · Headquarters: OKLAHOMA CITY, OK, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. American Civil Liberties Union of Oklahoma Inc

    EIN 825301552 · Headquarters: OKLAHOMA CITY, OK, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. American Coalition Inc

    EIN 263206532 · Headquarters: Tulsa, OK, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  13. American College of Dentists

    EIN 521415947 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. American College of Emergency Physicians

    EIN 731280918 · Headquarters: Porter, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  15. American College of Healthcare Executives

    EIN 371478436 · Headquarters: Oklahoma City, OK, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. American College of Nurse-midwives

    EIN 202239222 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. American College of Osteopathic Family Physicians

    EIN 731479138 · Headquarters: Enid, OK, US · Community Improvement & Capacity Building · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  18. American College of Physicians

    EIN 510233879 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. American College of Zoological Medicine

    EIN 953986741 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  20. American Collegiate Retailing Association

    EIN 863838579 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. American Council of Engineering Companies of Oklahoma

    EIN 237262513 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. American Criminal Justice Association Lambda Alpha Epsilon

    EIN 731540799 · Headquarters: Ada, OK, US · Crime & Legal Related · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  23. American Criminal Justice Association Lambda Alpha Epsilon

    EIN 900627203 · Headquarters: Tulsa, OK, US · Crime & Legal Related · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  24. American Culinary Federation Inc-Tulsa Chapter

    EIN 300484486 · Headquarters: Tulsa, OK, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  25. American Dental Assistants Association Oklahoma County

    EIN 731039610 · Headquarters: Moore, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. American Dental Student Association

    EIN 611538669 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  27. American Dream Center

    EIN 821478321 · Headquarters: Tulsa, OK, USA · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  28. American Dream on Caffeine Company

    EIN 853131740 · Headquarters: Tulsa, OK, US · Public & Societal Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  29. American Drug Utilization Review Society

    EIN 731619985 · Headquarters: EDMOND, OK, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. American Emu Association

    EIN 731379114 · Headquarters: Midwest City, OK, US · Community Improvement & Capacity Building · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  31. American Energy & Enviornmental Research Foundation

    EIN 272888646 · Headquarters: TULSA, OK, USA · Environment · Latest available filing year: 2013 · Primary form: IRS Form 990-PF

  32. American Energy Swim Club

    EIN 730781294 · Headquarters: Edmond, OK, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. American Ex-prisoners of War

    EIN 731282064 · Headquarters: Woodward, OK, US · Public & Societal Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  34. American Fed of State Cnty Mun Empl 1180 Oklahoma Local

    EIN 730594970 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  35. American Federation of Government Employees

    EIN 237069864 · Headquarters: Broken Bow, OK, US · Employment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  36. American Federation of Government Employees

    EIN 237112206 · Headquarters: Oklahoma City, OK, US · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  37. American Federation of Government Employees

    EIN 237177592 · Headquarters: GORE, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. American Federation of Government Employees

    EIN 300357826 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. American Federation of Government Employees

    EIN 371589231 · Headquarters: Tulsa, OK, US · Housing & Shelter · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  40. American Federation of Government Employees

    EIN 510254930 · Headquarters: Crescemt, OK, US · Employment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  41. American Federation of Government Employees

    EIN 721619965 · Headquarters: Lawton, OK, US · Employment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  42. American Federation of Government Employees

    EIN 731613315 · Headquarters: Ada, OK, US · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  43. American Federation of Government Employees

    EIN 736102190 · Headquarters: EDMOND, OK, US · Employment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  44. American Federation of Government Employees

    EIN 736103701 · Headquarters: EL RENO, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  45. American Federation of Government Employees

    EIN 736120202 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  46. American Federation of Government Employees 916

    EIN 730738165 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  47. American Federation of Musicians Local 375-703

    EIN 730126340 · Headquarters: OKLAHOMA CITY, OK, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. American Federation of Musicians of the Us & Canada

    EIN 730488945 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. American Federation of State County & Municipal Employees

    EIN 510671277 · Headquarters: Enid, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  50. American Federation of Teachers

    EIN 731060092 · Headquarters: Oklahoma City, OK, US · Education · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  51. American Federation of Teachers

    EIN 731307393 · Headquarters: SHAWNEE, OK, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  52. American Federation of Teachers

    EIN 731487844 · Headquarters: Tulsa, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  53. American Federation of Teachers Oc Classified Fed

    EIN 731377214 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. AMERICAN FEDERATION OF TEACHERS Oklahoma City Federation of Teachers

    EIN 731123371 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  55. American Federation State County & Municipal Employees 2875 Cty Norman

    EIN 736180131 · Headquarters: NORMAN, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  56. American Fence Association Inc

    EIN 205705348 · Headquarters: Osage, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. American Fidelity Foundation

    EIN 731236059 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  58. American Fisheries Society

    EIN 521820149 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. American Fisheries Society

    EIN 900417133 · Headquarters: Porter, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. American Foundation for the Beatification of Empress Zita

    EIN 862874142 · Headquarters: HULBERT, OK, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. American Foundry Society

    EIN 486141321 · Headquarters: Tonkawa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. American Friends of Haruv-mehalev Association Ltd

    EIN 822310935 · Headquarters: TULSA, OK, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. American Friends of Paws Association

    EIN 821665478 · Headquarters: Tulsa, OK, US · Animal Related · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  64. American Guild of Oganists

    EIN 731148457 · Headquarters: Ponca City, OK, US · Arts, Culture & Humanities · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  65. American Guild of Organists

    EIN 736119015 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. American Guild of Organists Ago

    EIN 273251832 · Headquarters: NORMAN, OK, US · Arts, Culture & Humanities · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  67. American Guild of Organists Ago

    EIN 731227701 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. American Guild of Organists Ago

    EIN 736102758 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  69. American Gulfcoast Select Best Practices Task Force Association

    EIN 862053791 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  70. American Gymnastics Sports and Educational Programs Inc

    EIN 824346938 · Headquarters: Norman, OK, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. American Harp Society

    EIN 842786343 · Headquarters: Midwest City, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  72. American Heritage Highland Games

    EIN 872534455 · Headquarters: TULSA, OK, US · Arts, Culture & Humanities · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  73. American Humanist Association

    EIN 731334979 · Headquarters: TULSA, OK, US · Community Improvement & Capacity Building · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  74. American Indian Athletic Hall of Fame Inc

    EIN 510206987 · Headquarters: Oklahoma City, OK, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. American Indian Chamber of Commerce of Oklahoma Inc

    EIN 731388121 · Headquarters: OKLAHOMA CITY, OK, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. American Indian Crusade Inc

    EIN 860225054 · Headquarters: Oklahoma City, OK, US · Arts, Culture & Humanities · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  77. American Indian Cultural Center Management Group Inc

    EIN 833895482 · Headquarters: OKLAHOMA CITY, OK, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. American Indian Heritage Center Inc

    EIN 731375404 · Headquarters: Tulsa, OK, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. American Indian Resource Center Inc

    EIN 731185707 · Headquarters: Tahlequah, OK, USA · Education · Latest available filing year: 2023 · Primary form: IRS Form 990

  80. American Indian Theater Company of Oklahoma

    EIN 730995634 · Headquarters: Tulsa, OK, US · Arts, Culture & Humanities · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  81. American Industrial Hygiene Association

    EIN 311254255 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. American Inns of Court Foundation

    EIN 731287602 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. American Inns of Court Foundation

    EIN 731304250 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. American Inns of Court Foundation

    EIN 731473738 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. American Inns of Court Foundation

    EIN 731480899 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. American Inns of Court Foundation

    EIN 731572709 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. American Inns of Court Foundation

    EIN 911829493 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. American Inst for the Improvement of Mathematics Learn & Instrucion

    EIN 731516469 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  89. American Institute of Aeronautics and Astronautics

    EIN 731347887 · Headquarters: Edmond, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. American Institute of Aeronautics and Astronautics

    EIN 736111429 · Headquarters: Norman, OK, US · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  91. American Institute of Aeronautics and Astronautics

    EIN 736111454 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. American Institute of Architects Oklahoma Chapter

    EIN 731338318 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. American Institute of Architecture Of

    EIN 730758597 · Headquarters: TULSA, OK, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. American Institute of Chemical Engineers

    EIN 731208328 · Headquarters: Bartesville, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. American Institute of Chemical Engineers Tulsa Section

    EIN 237424913 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. American Institute of Constructors

    EIN 730934883 · Headquarters: ARAPAHO, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. American International Service & Aid Inc

    EIN 202901642 · Headquarters: Broken Arrow, OK, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. American Iris Society

    EIN 432007159 · Headquarters: Ponca City, OK, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  99. American Iris Society

    EIN 731260612 · Headquarters: Tulsa, OK, US · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. American Iron Riders Inc

    EIN 453762775 · Headquarters: Lone Grove, OK, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

First page and all pages