Unknown & Unclassified nonprofits

Unknown & Unclassified nonprofits. Browse 557,756 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. Okemos Athletic Boosters Club Inc

    EIN 382494473 · Headquarters: Okemos, MI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  2. Okemos Education Association Inc

    EIN 383247151 · Headquarters: Okemos, MI, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  3. Okemos Education Foundation

    EIN 382571832 · Headquarters: OKEMOS, MI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  4. Okemos High School Parent Group

    EIN 383107555 · Headquarters: OKEMOS, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Okemos Masonic Temple Assoc

    EIN 386092521 · Headquarters: OKEMOS, MI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  6. Okemos Music Patrons

    EIN 382485477 · Headquarters: OKEMOS, MI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  7. Oketo Cemetery Association

    EIN 486116764 · Headquarters: Oketo, KS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Okie Rebel Jeeps

    EIN 825016031 · Headquarters: MOORE, OK, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  9. Okiebago State Club

    EIN 331178074 · Headquarters: Bartlesville, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Okinawa Karate Academy of Harrisburg

    EIN 264334628 · Headquarters: Harrisburg, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Okinawa Kenjin Kai Atlanta Georgia Inc

    EIN 582069409 · Headquarters: Loganville, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Okinawa Tomono Kai of Ohio

    EIN 311431720 · Headquarters: Hilliard, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Okinawan Friendship Society

    EIN 462626564 · Headquarters: SYRACUSE, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  14. Okinawan Karate Do Institute of Traditional Karate

    EIN 463588920 · Headquarters: Wilmington, DE, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Okinawan Sanchin-ryu Karate Association

    EIN 382600954 · Headquarters: Leslie, MI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  16. Okizu Foundation

    EIN 680291178 · Headquarters: NOVATO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Okla Assisted Living Facilities Asn

    EIN 731517707 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Okla Assn of Health Care Providers

    EIN 731486605 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Okla Co Med Soc-community Foundation

    EIN 730746253 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  20. Okla County Medical Society Alliance Inc

    EIN 731205746 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  21. Okla Independent Automobile Dealers

    EIN 731304386 · Headquarters: MOORE, OK, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  22. Okla Society for Respiratory Therapy

    EIN 237052156 · Headquarters: OKLAHOMA CITY, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Okla Society of Oral & Maxillofacial Surgeons

    EIN 731496000 · Headquarters: EDMOND, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  24. Oklahaven Childrens Chiropractic Ce

    EIN 731136943 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  25. Oklahoma Aau

    EIN 830436655 · Headquarters: Crescent, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. Oklahoma Academy for State Goals

    EIN 731255400 · Headquarters: Norman, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  27. Oklahoma Academy of Nutrition and Dietetics

    EIN 736095509 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  28. Oklahoma Academy of Ophthalmology

    EIN 731329023 · Headquarters: JEFFERSON CITY, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  29. Oklahoma Academy of Physician Associates Inc

    EIN 237452543 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Oklahoma Acupuncture Association

    EIN 731302905 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Oklahoma Agribusiness Retailers Assoc

    EIN 731351120 · Headquarters: ENID, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  32. Oklahoma Agricultural Aviation Assoc

    EIN 731310284 · Headquarters: Jackson, TN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  33. Oklahoma Agricultural Coop Council Inc

    EIN 237394403 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Oklahoma Airmen Flying Club Inc

    EIN 736504927 · Headquarters: Jenks, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Oklahoma Airport Operators Association Inc

    EIN 731249059 · Headquarters: HOUSTON, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  36. Oklahoma Allergy Clinic Foundation Inc

    EIN 736109394 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  37. Oklahoma Alliance for Retired Americans

    EIN 934097750 · Headquarters: Yukon, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Oklahoma Alliance on Aging Inc

    EIN 731195936 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Oklahoma Ambulance Alliance Inc

    EIN 853637457 · Headquarters: CLAREMORE, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  40. Oklahoma American Veteran News

    EIN 731276281 · Headquarters: Fort Smith, AR, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  41. Oklahoma Anthropological Society Inc

    EIN 736109560 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Oklahoma Antique Tractor Association Edge & Ta Branch 116

    EIN 923232355 · Headquarters: Jennings, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Oklahoma Arkansas Chapter American Concrete Paving Association

    EIN 731347260 · Headquarters: MOORE, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  44. Oklahoma Art Education Association

    EIN 731265767 · Headquarters: Claremore, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Oklahoma Art League

    EIN 736104042 · Headquarters: Edmond, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Oklahoma Artists Invitational

    EIN 465028853 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  47. Oklahoma Asphalt Pavement Association

    EIN 730803898 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Oklahoma Assoc of Family Career & Commun

    EIN 510143812 · Headquarters: STILLWATER, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Oklahoma Assoc of Tech Centers Inc

    EIN 237356210 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Oklahoma Association for Counseling and Development

    EIN 731262221 · Headquarters: Indianola, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  51. Oklahoma Association for Home Care Inc

    EIN 731072062 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Oklahoma Association for Justice

    EIN 730802420 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Oklahoma Association for Retarded

    EIN 731088742 · Headquarters: Perry, OK, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  54. Oklahoma Association for Retarded Citizens

    EIN 730746644 · Headquarters: Ardmore, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Oklahoma Association for the Gifted Creative Talented Inc

    EIN 731072839 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Oklahoma Association of Area Agencies on Aging

    EIN 731317252 · Headquarters: BURNS FLAT, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Oklahoma Association of Blind Students

    EIN 471839035 · Headquarters: Lawton, OK, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  58. Oklahoma Association of Broadcasters

    EIN 731160370 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Oklahoma Association of Broadcasters Education Foundation

    EIN 731319221 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Oklahoma Association of Chiefs of Police

    EIN 731119451 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  61. Oklahoma Association of Clinical Nurse Specialists

    EIN 800647003 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Oklahoma Association of College & University Business Officers Inc

    EIN 271627016 · Headquarters: NORMAN, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  63. Oklahoma Association of Defense Counsel

    EIN 731213615 · Headquarters: EDMOND, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  64. Oklahoma Association of Electric Cooperatives

    EIN 730556236 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. Oklahoma Association of Insurance Agents

    EIN 731392293 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Oklahoma Association of Municipal Attorneys

    EIN 730621132 · Headquarters: Edmond, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  67. Oklahoma Association of Nurse Anesthetists

    EIN 731078011 · Headquarters: MUSTANG, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. Oklahoma Association of Plumbing Heating and Cooling Contractors

    EIN 731385699 · Headquarters: Moore, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Oklahoma Association of Realtors

    EIN 730739195 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. Oklahoma Association of Rv Parks & Campgrounds

    EIN 731437682 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  71. Oklahoma Association of School Business Officials

    EIN 730800908 · Headquarters: EDMOND, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Oklahoma Association of the Deaf

    EIN 736098383 · Headquarters: BIXBY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  73. Oklahoma Association of Youth Services Inc

    EIN 510191993 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Oklahoma Athletics Baseball Club 20 36 Inc

    EIN 422930996 · Headquarters: Mustang, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Oklahoma Automobile Dealers Association

    EIN 730592975 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Oklahoma Automobile Insurance Plan

    EIN 731332580 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  77. Oklahoma Bankers Association

    EIN 730380620 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  78. Oklahoma Bankers Foundation

    EIN 731042334 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-T

  79. Oklahoma Baseball Coaches Association Inc

    EIN 851355768 · Headquarters: MCALESTER, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  80. Oklahoma Bass Federation

    EIN 450542025 · Headquarters: Holdenville, OK, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  81. Oklahoma Beef Council

    EIN 510165798 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  82. Oklahoma Behavioral Health Association Inc

    EIN 731481024 · Headquarters: Edmond, OK, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  83. Oklahoma Beta Building Association of Phi Delta Theta

    EIN 237221477 · Headquarters: Stillwater, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Oklahoma Beta of Pi Beta Phi Inc

    EIN 736102709 · Headquarters: STILLWATER, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Oklahoma Bible Academy

    EIN 731083792 · Headquarters: ENID, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Oklahoma Bitcoin Association Inc

    EIN 874534373 · Headquarters: Nichols Hills, OK, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  87. Oklahoma Bldg Construction Trades Council

    EIN 730766876 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  88. Oklahoma Bondsmen Association Inc

    EIN 731359299 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  89. Oklahoma Bowling Proprietors Association

    EIN 881605494 · Headquarters: ARLINGTON, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  90. Oklahoma Buckskin Horse Association

    EIN 731298486 · Headquarters: Saint Joseph, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  91. Oklahoma Building Designers Corporation

    EIN 731209066 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  92. Oklahoma Bulldogs Baseball

    EIN 900664742 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  93. Oklahoma Business Roundtable Inc

    EIN 731377268 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Oklahoma Cable & Telecommunications Association

    EIN 731281121 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  95. Oklahoma Cancer Registrars Association

    EIN 731460575 · Headquarters: El Reno, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Oklahoma Cattlemen's Association In

    EIN 730608465 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Oklahoma Cattlemen's Foundation Inc

    EIN 731135528 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. Oklahoma Cattlewomen Inc

    EIN 730736558 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Oklahoma CCIM Chapter of Realtors

    EIN 731171172 · Headquarters: Tulsa, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  100. Oklahoma Cello Project

    EIN 821403399 · Headquarters: Edmond, OK, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

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