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. Honor Society of Phi Kappa Phi

    EIN 731559516 · Headquarters: OKLAHOMA CITY, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Honor Society of Phi Kappa Phi

    EIN 736097517 · Headquarters: STILLWATER, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Honorable Warrior Foundation

    EIN 884028817 · Headquarters: COLBERT, OK, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  4. Hooked on Pedaling Inc

    EIN 851105723 · Headquarters: Muskogee, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  5. Hooker Ffa Alumni

    EIN 731505629 · Headquarters: HOOKER, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  6. Hope Extended Inc

    EIN 862048874 · Headquarters: Yukon, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Hope for Houses Foundation

    EIN 813598516 · Headquarters: Broken Arrow, OK, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  8. Hope House of Cherokee County Inc

    EIN 731361005 · Headquarters: Tahlequah, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Hope Impacting Souls Inc

    EIN 811035369 · Headquarters: Broken Arrow, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Hope Is Oxygen Inc

    EIN 821648393 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Hospice of Green Country Inc

    EIN 731261742 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  12. Hospice of North Central Oklahoma

    EIN 731176126 · Headquarters: PONCA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. Hosta Connection

    EIN 731611558 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  14. How Foundation Recovery Center of Oklahoma Inc

    EIN 731130618 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Hoyukai Japanese Friendship Club

    EIN 134364651 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Hudson-essex Terraplane Club Inc

    EIN 311103443 · Headquarters: Mannford, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Hulah Lake Senior Citizens Inc

    EIN 731115037 · Headquarters: Pawhuska, OK, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  18. Hulah Water District 20

    EIN 730951813 · Headquarters: BARTLESVILLE, OK, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  19. Hull Family Association

    EIN 541740215 · Headquarters: BARTLESVILLE, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. Human Resources Section of New and Related Services Division of Oklah

    EIN 991757460 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Humane Society of Lawton-comanche Co

    EIN 731288816 · Headquarters: LAWTON, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  22. Hung Viet Dragon and Lion Dance Ass Ociation

    EIN 423980825 · Headquarters: OKLAHOMA CITY, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Hunting Retriever Club Inc

    EIN 581750231 · Headquarters: BARTLESVILLE, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Husky Wrestling Club

    EIN 862533587 · Headquarters: EDMOND, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  25. Hydro Masonic Cemetery Trust Fund Inc

    EIN 736093859 · Headquarters: HYDRO, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  26. Hyechka Club of Tulsa Inc

    EIN 736100126 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Iamaw Local Lodge 135

    EIN 331186129 · Headquarters: ALTUS, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  28. Ibew Local Union 584

    EIN 730298078 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Ida M McFarlin Memorial Trust 486010AC5

    EIN 736090533 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Idabel Chamber of Commerce & Agriculture

    EIN 730531453 · Headquarters: Idabel, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Ideal Homes Foundation Inc

    EIN 731594602 · Headquarters: NORMAN, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  32. Iiakwe Iuk Club

    EIN 471543608 · Headquarters: ENID, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. Iiao Insurance Foundation

    EIN 731317684 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. In His Image Inc

    EIN 731369680 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. In His Service Inc

    EIN 731160838 · Headquarters: Tulsa, OK, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990

  36. Increasemybiz Inc

    EIN 460792074 · Headquarters: SHAWNEE, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. Ind Orderof Odd Fellow Cemtery Assn

    EIN 730686211 · Headquarters: TONKAWA, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  38. Independant Eagles for the Blind and Disabled

    EIN 465141798 · Headquarters: Del City, OK, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  39. Independent Electrical Contractors

    EIN 730944018 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. Independent Finance Institute Inc

    EIN 731034242 · Headquarters: ARDMORE, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  41. Independent Insurance Agents Association of Greater Oklahoma City Inc

    EIN 730381354 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  42. Independent Insurance Agents of Enid Inc

    EIN 736100623 · Headquarters: Enid, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  43. Independent Insurance Agents of Greater Tulsa Inc

    EIN 730548796 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  44. Independent Opportunities, Inc. (IOI)

    EIN 742547238 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. Independent Order of Odd Fellows

    EIN 237146413 · Headquarters: Healdton, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Independent Order of Odd Fellows

    EIN 237182820 · Headquarters: jenks, OK, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  47. Independent Order of Odd Fellows

    EIN 237597398 · Headquarters: ENID, OK, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  48. Independent Order of Odd Fellows

    EIN 237597401 · Headquarters: Wagoner, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  49. Independent Order of Odd Fellows

    EIN 237597651 · Headquarters: jenks, OK, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  50. Independent Order of Odd Fellows

    EIN 237599408 · Headquarters: OKLAHOMA CITY, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Independent Order of Odd Fellows

    EIN 237602003 · Headquarters: Enid, OK, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  52. Independent Order of Odd Fellows

    EIN 237607400 · Headquarters: Enid, OK, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  53. Independent Order of Odd Fellows

    EIN 237610975 · Headquarters: Enid, OK, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  54. Independent Order of Odd Fellows

    EIN 731013117 · Headquarters: Jones, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Independent Order of Odd Fellows

    EIN 731269221 · Headquarters: Tonkawa, OK, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  56. India Practical Missions

    EIN 731056928 · Headquarters: Tulsa, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  57. India Shriners

    EIN 730297070 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. India Shriners Group Return

    EIN 510154991 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Indian Electric Cooperative

    EIN 730297135 · Headquarters: Cleveland, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Indian Nations Council Boy Scouts of America

    EIN 730579230 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Indian Nations Presbytery Foundation

    EIN 581099447 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  62. Indian Nations Tracking Club

    EIN 271689087 · Headquarters: Inola, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Indian Territory Tx Longhorn Association

    EIN 731483952 · Headquarters: Glencoe, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Indian Womens Club of Bartlesville Oklahoma Inc

    EIN 730946011 · Headquarters: Bartlesville, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Indianola Cemetery Fund

    EIN 731148596 · Headquarters: MCALESTER, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Indianola Senior Citizens Community Center Incorporated

    EIN 731129661 · Headquarters: Indianola, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Information Systems Audit and Control Association

    EIN 731086325 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Information Systems Audit and Control Association

    EIN 731206933 · Headquarters: Edmond, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Insight Ministries Inc

    EIN 731281348 · Headquarters: EDMOND, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  70. Institute of Industrial Engineers Inc

    EIN 736102891 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  71. Institute of Internal Auditors

    EIN 736097483 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Institute of Internal Auditors

    EIN 741867964 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  73. Institute of Management Accountants Inc

    EIN 237354315 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  74. Institute of Management Accountants Inc

    EIN 730992931 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  75. Int'l Assoc of Bridge Structural Orn and Rein Iron Workers LU No 48

    EIN 730298025 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Inter-tribal Council Inc

    EIN 730791683 · Headquarters: MIAMI, OK, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  77. International Alliance Theatrical Stage Employees & Moving Picture

    EIN 731037879 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. International Assn of Firefighters

    EIN 736109378 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  79. International Association for Computer Information Systems

    EIN 941689561 · Headquarters: STILLWATER, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  80. International Association of Electrical Inspectors

    EIN 731309585 · Headquarters: Kingfisher, OK, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  81. International Association of Fire F

    EIN 237244249 · Headquarters: MIDWEST CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  82. International Association of Fire Fighters

    EIN 203561155 · Headquarters: Purcell, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. International Association of Fire Fighters

    EIN 237171190 · Headquarters: Yukon, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. International Association of Fire Fighters

    EIN 237277931 · Headquarters: Chickasha, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. International Association of Fire Fighters

    EIN 237453929 · Headquarters: PIEDMONT, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. International Association of Fire Fighters

    EIN 510209368 · Headquarters: CUSHING, OK, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  87. International Association of Fire Fighters

    EIN 730957897 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. International Association of Fire Fighters

    EIN 730965666 · Headquarters: Sapulpa, OK, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  89. International Association of Fire Fighters

    EIN 730991661 · Headquarters: Ponca City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. International Association of Fire Fighters

    EIN 731119213 · Headquarters: Owasso, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. International Association of Fire Fighters

    EIN 731333272 · Headquarters: Duncan, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. International Association of Fire Fighters

    EIN 731395411 · Headquarters: Sand Springs, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. International Association of Fire Fighters

    EIN 731483762 · Headquarters: Pryor, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. International Association of Fire Fighters

    EIN 731581742 · Headquarters: Tonkawa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. International Association of Fire Fighters

    EIN 736146839 · Headquarters: Stillwater, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  96. International Association of Fire Fighters

    EIN 800016265 · Headquarters: Tahlequah, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. International Association of Fire Fighters

    EIN 871585247 · Headquarters: Harrah, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  98. International Association of Fire Fighters

    EIN 874582317 · Headquarters: Marlow, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. International Association of Fire Fighters

    EIN 912004951 · Headquarters: Vinita, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. International Association of Fire Fighters

    EIN 992301166 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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