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. Ohio Randonneurs

    EIN 931899345 · Headquarters: Canton, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  2. Ohio Ready Mixed Concrete Associati

    EIN 314271235 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  3. Ohio Realtors Charitable & Educational Foundation

    EIN 310998071 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  4. Ohio Recorders Association

    EIN 311351642 · Headquarters: Columbus, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  5. Ohio Recreational Sports Association

    EIN 341501724 · Headquarters: Columbus, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Ohio Region Classic Car Club of America

    EIN 311304289 · Headquarters: CHAGRIN FALLS, OH, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  7. Ohio Region of the Antique Automobile Club of America

    EIN 453634578 · Headquarters: Ashtabula, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Ohio Renal Association C/o Diane Wish President

    EIN 341773402 · Headquarters: SHAKER HEIGHTS, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  9. Ohio Restaurant Association

    EIN 314271670 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Ohio Retired Teacher Foundation

    EIN 316050636 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. Ohio Retirement For Teachers Association Inc

    EIN 310566151 · Headquarters: Columbus, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  12. Ohio River Four Wheelers

    EIN 852536075 · Headquarters: Cincinnati, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Ohio River Launch Club

    EIN 310397355 · Headquarters: Cincinnati, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  14. Ohio River Road Runners Club

    EIN 310907357 · Headquarters: Beavercreek, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  15. Ohio River Sternwheel Festival Inc

    EIN 311005854 · Headquarters: MARIETTA, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  16. Ohio River Valley Chapter of the Risk and Insurance Management Soci

    EIN 311369576 · Headquarters: Cincinnati, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Ohio River Valley Llama Association

    EIN 311331285 · Headquarters: r, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Ohio River Valley Lodge No 231 BPO Elks of the USA

    EIN 341314445 · Headquarters: Martins Ferry, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  19. Ohio Roofing Contractors' Association

    EIN 311172285 · Headquarters: DAYTON, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  20. Ohio Rubber Group Inc

    EIN 421749594 · Headquarters: BATH, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  21. Ohio Rural Electric Cooperatives Inc

    EIN 510174617 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. Ohio Rural Letter Carriers' Association

    EIN 237235345 · Headquarters: DELLROY, Ohio, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Ohio Rural Water Association

    EIN 310917953 · Headquarters: ZANESVILLE, OH, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  24. Ohio Sad Sacks

    EIN 273668608 · Headquarters: Columbus, OH, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  25. Ohio Safe and Healthy Communities Campaign

    EIN 823215606 · Headquarters: YOUNGSTOWN, OH, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  26. Ohio Safeguards Inc

    EIN 311140554 · Headquarters: Fairfield Township, OH, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  27. Ohio Saint Bernard Club Inc

    EIN 237117001 · Headquarters: BROADVIEW HTS, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Ohio Savings Charitable Foundation

    EIN 237055858 · Headquarters: AURORA, OH, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-PF

  29. Ohio School Boards Association

    EIN 314414897 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Ohio School Boards Association Legal Assistance Fund

    EIN 310934576 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Ohio School Bus Mechanics Association

    EIN 311333076 · Headquarters: GAHANNA, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  32. Ohio School for the Deaf Alumni Association

    EIN 314384475 · Headquarters: WESTERVILLE, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Ohio School for the Deaf Foundation Inc

    EIN 863674253 · Headquarters: Worthington, OH, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  34. Ohio School Speech Pathology Educational Audiology Coalition Inc

    EIN 341743294 · Headquarters: NORTH ROYALTON, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Ohio Seed Improvement Association

    EIN 314379745 · Headquarters: CROTON, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  36. Ohio Self Determination Association

    EIN 311367252 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Ohio Self-Insurers Association

    EIN 510138930 · Headquarters: Cleveland, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  38. Ohio Sheep Improvement Association

    EIN 311351374 · Headquarters: Columbus, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Ohio Shoulder & Elbow Surgeons Association Inc

    EIN 933819990 · Headquarters: Pickerington, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  40. Ohio Sickle Cell Health Association Inc

    EIN 310968012 · Headquarters: Columbus, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Ohio Simmental Association Inc

    EIN 346675241 · Headquarters: West Salem, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  42. Ohio Skating Association The

    EIN 341325323 · Headquarters: Mayfield Heights, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  43. Ohio SMART

    EIN 341893336 · Headquarters: Cleveland, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Ohio Soccer Association - North

    EIN 341544519 · Headquarters: NORTHFIELD, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  45. Ohio Society Daughters of the American Revolution

    EIN 346597457 · Headquarters: Philo, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Ohio Society for Respiratory Care

    EIN 341250302 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  47. Ohio Society for the Prevention of Cruelty to Animals

    EIN 311077151 · Headquarters: GROVE CITY, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Ohio Society Inc

    EIN 316147577 · Headquarters: Goshen, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  49. Ohio Society of Anesthesiologists Inc

    EIN 340866225 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  50. Ohio Society of Association Professionals

    EIN 311006124 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Ohio Society of Certified Public Accountants

    EIN 314378053 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Ohio Society of Health System Pharmacists

    EIN 311387450 · Headquarters: Columbus, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  53. Ohio Society of Oral Surgeons

    EIN 237279762 · Headquarters: DUBLIN, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  54. Ohio Society of Pathologists Inc

    EIN 346555679 · Headquarters: Mayfield Heights, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Ohio Society of Professional Engineers

    EIN 314350044 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Ohio Solid Organ Transplantation Consortium

    EIN 311143811 · Headquarters: SPRINGFIELD, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  57. Ohio Solid Organ Transplantation Consortium

    EIN 311397404 · Headquarters: Springfield, OH, United States · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  58. Ohio Southeast Enterprise Development Fund Inc

    EIN 311413241 · Headquarters: ATHENS, OH, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  59. Ohio Soybean Association

    EIN 237167474 · Headquarters: WORTHINGTON, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  60. Ohio Soybean Council

    EIN 311291213 · Headquarters: WORTHINGTON, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Ohio Special Needs Trust Coalition Inc

    EIN 203999873 · Headquarters: Worthington, OH, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  62. Ohio Speech Language Hearing Assn

    EIN 316083820 · Headquarters: GERMANTOWN, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. Ohio Squirrels Water Polo Club

    EIN 261796142 · Headquarters: Cincinnati, OH, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  64. Ohio State Assoc Nurse Anesthetist

    EIN 346540987 · Headquarters: WORTHINGTON, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  65. Ohio State Association of Plumbing- Heating-cooling Contractors Inc

    EIN 340707601 · Headquarters: CHAGRIN FALLS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Ohio State Association of the National Campers & Hikers Assn

    EIN 237202138 · Headquarters: Olmsted Falls, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Ohio State Bar Association

    EIN 314271520 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. Ohio State Beekeepers Association Inc

    EIN 341779506 · Headquarters: Jefferson, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  69. Ohio State Beekeepers Association Inc

    EIN 474680936 · Headquarters: New Bremen, OH, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  70. Ohio State Beekeepers Association Inc

    EIN 821104527 · Headquarters: Shelby, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Ohio State Beekeepers Association Inc

    EIN 823160685 · Headquarters: Chagrin Falls, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  72. Ohio State Beekeepers Association Inc

    EIN 830787767 · Headquarters: Pleasant Plain, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Ohio State Beekeepers Association Inc Group

    EIN 830536372 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Ohio State Building and Construction Trades Council

    EIN 314271527 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Ohio State Chiropractic Association

    EIN 237123957 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Ohio State Coroners Association

    EIN 237180376 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  77. Ohio State Council Knights of Columbus

    EIN 237211961 · Headquarters: FAIRFIELD, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Ohio State Delta Phi Lambda Sorority Inc

    EIN 841739464 · Headquarters: Columbus, OH, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  79. Ohio State Dental Faculty Practice Inc - John R Kalmar Dmd Phd

    EIN 311203750 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Ohio State Eagles Charity Fund Inc

    EIN 311051101 · Headquarters: BEAVERCREEK, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. Ohio State Farm Agents & Associates PAC

    EIN 201353520 · Headquarters: Cincinnati, OH, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  82. Ohio State Firefighters Association

    EIN 316079930 · Headquarters: MOGADORE, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  83. Ohio State Grange

    EIN 314271570 · Headquarters: FREDERICKTOWN, OH, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  84. Ohio State Grange of Patron of Husbandry

    EIN 311231063 · Headquarters: OXFORD, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Ohio State Grange of Patrons of 211 4 Baughman

    EIN 131368997 · Headquarters: Mansfield, OH, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  86. Ohio State Grange of Patrons of Hus Bandry

    EIN 311086721 · Headquarters: CLARKSBURG, OH, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  87. Ohio State Grange of Patrons of Husbandry

    EIN 200422133 · Headquarters: Pickerington, OH, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  88. Ohio State Grange of Patrons of Husbandry

    EIN 237059778 · Headquarters: Amanda, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Ohio State Grange of Patrons of Husbandry

    EIN 237424198 · Headquarters: zanesville, OH, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  90. Ohio State Grange of Patrons of Husbandry

    EIN 262604580 · Headquarters: Wooster, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Ohio State Grange of Patrons of Husbandry

    EIN 300183528 · Headquarters: McConnelsville, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Ohio State Grange of Patrons of Husbandry

    EIN 310855210 · Headquarters: Steubenville, OH, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  93. Ohio State Grange of Patrons of Husbandry

    EIN 310924620 · Headquarters: Circleville, OH, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  94. Ohio State Grange of Patrons of Husbandry

    EIN 310930317 · Headquarters: batavia, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  95. Ohio State Grange of Patrons of Husbandry

    EIN 311033224 · Headquarters: Tipp City, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Ohio State Grange of Patrons of Husbandry

    EIN 311080108 · Headquarters: Fredericktown, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. Ohio State Grange of Patrons of Husbandry

    EIN 311106703 · Headquarters: Logan, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Ohio State Grange of Patrons of Husbandry

    EIN 311120951 · Headquarters: tipp city, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. Ohio State Grange of Patrons of Husbandry

    EIN 311200531 · Headquarters: OXFORD, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Ohio State Grange of Patrons of Husbandry

    EIN 311231555 · Headquarters: Amesville, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

First page and all pages