Unknown & Unclassified nonprofits in Ohio

Unknown & Unclassified nonprofits in Ohio. Browse 26,579 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. National Kappa Kappa Iota Inc

    EIN 742307786 · Headquarters: Streetsboro, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  2. National Kappa Kappa Iota Inc

    EIN 742307791 · Headquarters: Cuyahoga Falls, OH, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  3. National Kappa Kappa Iota Inc

    EIN 742307793 · Headquarters: Streetsboro, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. National Kappa Kappa Iota Inc

    EIN 742307799 · Headquarters: Streetsboro, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. National Kappa Kappa Iota Inc

    EIN 742793482 · Headquarters: Streetsboro, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. National Kitchen & Bath Assoc

    EIN 311330610 · Headquarters: West Jefferson, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. National Kitchen & Bath Assoc

    EIN 341626578 · Headquarters: Amherst, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. National League for Nursing Inc

    EIN 556024000 · Headquarters: Pedro, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. National Local Technical Assistance Program Association

    EIN 391735773 · Headquarters: Nashport, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. National Marine Distributors Association Inc

    EIN 236416043 · Headquarters: WORTHINGTON, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. National Marriage Encounter

    EIN 310036032 · Headquarters: CINCINNATI, OH, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  12. National Model Railroad Association Division 7 Mid Central Region

    EIN 311080884 · Headquarters: BATAVIA, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  13. National Museum of Education in Partnership for Americas Future Inc

    EIN 341673581 · Headquarters: STOW, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  14. National Open Commerce and Safer Highway Coalition

    EIN 991388967 · Headquarters: Columbus, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  15. National Order of Trench Rats Cincinnati Dugout 634

    EIN 364825509 · Headquarters: Fairfield, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  16. National Organization for Women Inc

    EIN 521309677 · Headquarters: Cleveland, OH, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  17. National Organization of Black Law Enforcement Executives

    EIN 831989908 · Headquarters: Columbus, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. National Organization of Black Law Enforcement Executives Noble

    EIN 911823721 · Headquarters: CLEVELAND, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. National Precinct Alliance

    EIN 272324971 · Headquarters: Cincinnati, OH, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  20. National Railway Historical Society Inc Conneaut Chapter

    EIN 237023415 · Headquarters: CONNEAUT, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. National Reyes Syndrome Foundation Inc

    EIN 510155006 · Headquarters: BRYAN, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  22. National Rural Letter Carriers Assocation

    EIN 311763629 · Headquarters: Rushville, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  23. National Rural Letter Carriers Association

    EIN 237235261 · Headquarters: Graysville, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. National Rural Letter Carriers Association

    EIN 237235274 · Headquarters: MORRAL, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. National Rural Letter Carriers Association

    EIN 237235332 · Headquarters: ST MARYS, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. National Rural Letter Carriers Association

    EIN 237235333 · Headquarters: WAUSEON, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. National Rural Letter Carriers Association

    EIN 237235335 · Headquarters: HILLSBORO, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. National Rural Letter Carriers Association

    EIN 311078628 · Headquarters: LOVELAND, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. National Rural Letter Carriers Association

    EIN 311763736 · Headquarters: IRONTON, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. National Rural Letter Carriers Association

    EIN 341338210 · Headquarters: FINDLAY, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. National Rural Letter Carriers Association

    EIN 341951408 · Headquarters: Lynhurst, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. National Rural Letter Carriers Association

    EIN 341952256 · Headquarters: MINERAL CITY, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. National Rural Letter Carriers Association

    EIN 341952861 · Headquarters: Newcomerstown, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. National Rural Letter Carriers Association

    EIN 522366826 · Headquarters: GRAFTON, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. National Rural Letter Carriers Association

    EIN 943434149 · Headquarters: MECHANICSBURG, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. National Sales & Marketing Executives Inc

    EIN 352539109 · Headquarters: CANTON, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  37. National School Boards Leadership Council

    EIN 874543357 · Headquarters: CLARKSVILLE, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. National School Boards Leadership Council Ed

    EIN 882120816 · Headquarters: CLARKSVILLE, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. National Show Horse Registry Inc

    EIN 611011886 · Headquarters: DAYTON, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. National Slovak Society of the USA

    EIN 237501127 · Headquarters: Moxahala, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. National Slovak Society of the USA

    EIN 237501132 · Headquarters: Parm, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. National Slovak Society of the USA

    EIN 237501137 · Headquarters: Brooklyn, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. National Slovak Society of the USA

    EIN 237501142 · Headquarters: Lorain, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. National Slovak Society of the USA

    EIN 237501148 · Headquarters: Fairview Park, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. National Slovak Society of the USA

    EIN 237501161 · Headquarters: Lowellville, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. National Slovak Society of the USA

    EIN 770666580 · Headquarters: Strongsville, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. National Society Colonial Dames Xvii Century

    EIN 237163204 · Headquarters: Cleveland, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. National Society Colonial Dames Xvii Century

    EIN 237164796 · Headquarters: Dublin, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. National Society Colonial Dames Xvii Century

    EIN 300705463 · Headquarters: Wapakoneta, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. National Society Colonial Dames Xvii Century

    EIN 310992895 · Headquarters: OxFord, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. National Society Colonial Dames Xvii Century

    EIN 316083411 · Headquarters: POWELL, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. National Society Colonial Dames Xvii Century

    EIN 341292282 · Headquarters: Streetsboro, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. National Society Colonial Dames Xvii Century

    EIN 341299771 · Headquarters: Shaker Heights, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. National Society Colonial Dames Xvii Century

    EIN 341309924 · Headquarters: Cortland, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. National Society Colonial Dames Xvii Century

    EIN 341310151 · Headquarters: Eastlake, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. National Society Colonial Dames Xvii Century

    EIN 341334246 · Headquarters: Salem, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  57. National Society Colonial Dames Xvii Century

    EIN 352467383 · Headquarters: Huron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. National Society Colonial Dames Xvii Century

    EIN 454951516 · Headquarters: Morrow, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. National Society Colonial Dames Xvii Century

    EIN 521357512 · Headquarters: Hanoverton, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. National Society Colonial Dames Xvii Century

    EIN 556039225 · Headquarters: Wapakoneta, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. National Society Daughters of the Union 1861-1865 Inc

    EIN 311418803 · Headquarters: Milford, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. National Society of Accountants for Cooperatives

    EIN 566045918 · Headquarters: MIAMISBURG, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. National Society of Accountants for Cooperatives

    EIN 911950863 · Headquarters: Dayton, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  64. National Society of Daughters of American Revolution

    EIN 316049782 · Headquarters: Columbus, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. National Society of Insurance Premium Auditors

    EIN 431075981 · Headquarters: Columbus, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. National Society of New England Women

    EIN 310940637 · Headquarters: Cleveland, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. National Society of Pershing Angels Unit Ab85

    EIN 462939486 · Headquarters: Kettering, OH, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  68. National Society of Southern Dames of American Inc

    EIN 352553533 · Headquarters: Sunbury, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. National Society of the Childern of the American Revolution

    EIN 271646071 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. National Society of the Children of the American Recolution

    EIN 271322613 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. National Society of the Children of the American Revolution

    EIN 237248867 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. National Society of the Children of the American Revolution

    EIN 262535751 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. National Society of the Children of the American Revolution

    EIN 262692566 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. National Society of the Children of the American Revolution

    EIN 331211356 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. National Society of the Children of the American Revolution

    EIN 341778516 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. National Society of the Children of the American Revolution

    EIN 352331492 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. National Society of the Children of the American Revolution

    EIN 412273442 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. National Society of the Children of the American Revolution

    EIN 450593453 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. National Society of the Children of the American Revolution

    EIN 510673918 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. National Society of the Children of the American Revolution

    EIN 611560147 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. National Society of the Children of the American Revolution

    EIN 743248499 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. National Society of the Children of the American Revolution

    EIN 770720745 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. National Society of the Children of the American Revolution

    EIN 815363519 · Headquarters: berlin heights, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. National Society of the Children of the American Revolution

    EIN 825390195 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. National Society of the Children of the American Revolution

    EIN 873255367 · Headquarters: Andover, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  86. National Society of the Children of the American Revolution

    EIN 900353831 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. National Society of the Daughters of the American Revolution

    EIN 237025958 · Headquarters: Saint Paris, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. National Society of the Daughters of the American Revolution

    EIN 237025960 · Headquarters: Dublin, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. National Society of the Daughters of the American Revolution

    EIN 237026118 · Headquarters: NEW LEBANON, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. National Society of the Daughters of the American Revolution

    EIN 237026123 · Headquarters: Alexandria, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. National Society of the Daughters of the American Revolution

    EIN 237027689 · Headquarters: CINCINNATI, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. National Society of the Daughters of the American Revolution

    EIN 237027704 · Headquarters: Albany, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. National Society of the Daughters of the American Revolution

    EIN 237027705 · Headquarters: Blanchester, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. National Society of the Daughters of the American Revolution

    EIN 237027709 · Headquarters: Bethel, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. National Society of the Daughters of the American Revolution

    EIN 237057469 · Headquarters: Franklin, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. National Society of the Daughters of the American Revolution

    EIN 237097304 · Headquarters: FAIRBORN, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. National Society of the Daughters of the American Revolution

    EIN 237198802 · Headquarters: Hudson, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. National Society of the Daughters of the American Revolution

    EIN 237204223 · Headquarters: Alliance, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. National Society of the Daughters of the American Revolution

    EIN 256064365 · Headquarters: Burghill, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. National Society of the Daughters of the American Revolution

    EIN 263151517 · Headquarters: Fairfield Township, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

First page and all pages