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. Sigma Gamma Rho Sorority Inc

    EIN 465181944 · Headquarters: TOLEDO, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Sigma Gamma Rho Sorority Inc

    EIN 900640841 · Headquarters: AKRON, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Sigma Gamma Rho Sorority Inc

    EIN 900871273 · Headquarters: Willoughby, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Sigma Gamma Rho Sorority Inc

    EIN 901783891 · Headquarters: DAYTON, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Sigma Gamma Rho Sorority Inc

    EIN 912104588 · Headquarters: DAYTON, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Sigma Gamma Rho Sorority Inc

    EIN 993523299 · Headquarters: LIBERTY TWP, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Sigma Gamma Rho Sorority Inc Delta Omega Chapter

    EIN 208907930 · Headquarters: Wilberforce, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Sigma Gamma Rho Sorority Inc Els Chapter

    EIN 311222079 · Headquarters: CINCINNATI, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  9. Sigma Gamma Rho Sorority Inc- Tau Omicron

    EIN 830527212 · Headquarters: Wilmington, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Sigma Nu Fraternity

    EIN 237176322 · Headquarters: Alliance, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Sigma Nu Fraternity

    EIN 271505630 · Headquarters: Strongsville, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  12. Sigma Nu Fraternity

    EIN 340930620 · Headquarters: Bowling Green, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Sigma Nu Fraternity

    EIN 346557330 · Headquarters: KENT, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  14. Sigma Nu Fraternity

    EIN 346598251 · Headquarters: Cleveland, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  15. Sigma Nu Fraternity

    EIN 900342034 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Sigma Nu Fraternity Inc - Zeta Gamma Alumni Chapter

    EIN 861791799 · Headquarters: WILLOUGHBY, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  17. Sigma Nu House Corporation of Bowling Green State University

    EIN 341583667 · Headquarters: Richfield, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 311277169 · Headquarters: Blue Ash, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 316067761 · Headquarters: Columbus, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 341624759 · Headquarters: Lima, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 364092660 · Headquarters: Kirtland, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911895702 · Headquarters: Perrysburg, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 912048914 · Headquarters: Columbus, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Sigma Phi Epsilon - Oh Rho

    EIN 333157412 · Headquarters: SPRINGBORO, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Sigma Phi Epsilon - Oh Sigma

    EIN 872434203 · Headquarters: Strongsville, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. Sigma Phi Epsilon Alumni Association of the Dayton Ohio Area

    EIN 873658613 · Headquarters: Springboro, OH, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  27. Sigma Phi Epsilon Fraternity Inc

    EIN 205930256 · Headquarters: University Heights, OH, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  28. Sigma Phi Epsilon Fraternity Inc

    EIN 346556192 · Headquarters: Berea, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Sigma Phi Epsilon Fraternity Inc

    EIN 473111308 · Headquarters: Toledo, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. Sigma Phi Epsilon Fraternity Inc

    EIN 911821913 · Headquarters: Sylvania, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Sigma Phi Epsilon Fraternity Ohio Gamma Chapter

    EIN 314383561 · Headquarters: BLACKLICK, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Sigma Phi Gamma International

    EIN 316041583 · Headquarters: Nelsonville, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  33. Sigma Phi Gamma International Sorority Inc

    EIN 237442023 · Headquarters: Glenford, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  34. Sigma Phi Gamma International Sorority Inc

    EIN 310899739 · Headquarters: Lancaster, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  35. Sigma Phi Gamma International Sorority Inc

    EIN 310925171 · Headquarters: Tipp City, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  36. Sigma Phi Gamma International Sorority Inc

    EIN 311116262 · Headquarters: Bellefontaine, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  37. Sigma Phi Gamma International Sorority Inc

    EIN 311370383 · Headquarters: Batavia, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  38. Sigma Phi Gamma International Sorority Inc

    EIN 316038127 · Headquarters: Centerville, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  39. Sigma Phi Gamma International Sorority Inc

    EIN 316040999 · Headquarters: Dayton, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  40. Sigma Phi Gamma International Sorority Inc

    EIN 316050242 · Headquarters: Dayton, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  41. Sigma Phi Gamma International Sorority Inc

    EIN 316050245 · Headquarters: Miamisburg, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  42. Sigma Phi Gamma International Sorority Inc

    EIN 316050655 · Headquarters: Athens, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  43. Sigma Phi Gamma International Sorority Inc

    EIN 316050657 · Headquarters: Springboro, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  44. Sigma Phi Gamma International Sorority Inc

    EIN 316051155 · Headquarters: Waverly, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  45. Sigma Phi Gamma International Sorority Inc

    EIN 341617071 · Headquarters: Toledo, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  46. Sigma Phi Gamma International Sorority Inc

    EIN 346556135 · Headquarters: Lima, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  47. Sigma Phi Gamma International Sorority Inc

    EIN 382987660 · Headquarters: Toledo, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  48. Sigma Phi Gamma International Sorority Inc

    EIN 510140662 · Headquarters: Tipp City, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  49. Sigma Phi Gamma International Sorority Inc

    EIN 562385555 · Headquarters: Columbus, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  50. Sigma Pi - Zeta

    EIN 272297794 · Headquarters: Ada, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  51. Sigma Pi Fraternity International

    EIN 275277235 · Headquarters: HILLIARD, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Sigma Pi Fraternity Interntional

    EIN 820902870 · Headquarters: ADA, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Sigma Sigma Sigma Inc

    EIN 823317727 · Headquarters: Stow, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  54. Sigma Tau Gamma Fraternity D/b/a Zeta Omega Associate Chapter

    EIN 824018798 · Headquarters: COLUMBUS, OH, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  55. Sigma Theta Tau Inc

    EIN 237243780 · Headquarters: Cincinnati, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Sigma Theta Tau Inc

    EIN 311242968 · Headquarters: Westerville, OH, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  57. Sigma Theta Tau Inc

    EIN 316050631 · Headquarters: Columbus, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Sigma Theta Tau Inc

    EIN 341371076 · Headquarters: TOLEDO, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Sigma Theta Tau Inc

    EIN 341587783 · Headquarters: Pepper Pike, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Sigma Theta Tau Inc

    EIN 341720319 · Headquarters: Cleveland, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Sigma Theta Tau Inc

    EIN 346596209 · Headquarters: Cleveland Heights, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Sigma Theta Tau Inc

    EIN 351928444 · Headquarters: Youngstown, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Sigma Theta Tau Inc

    EIN 363479069 · Headquarters: Columbus, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Sigma Theta Tau Inc

    EIN 621092240 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Sigma Theta Tau International Inc

    EIN 363386701 · Headquarters: Dayton, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Sigma Theta Tau International Inc

    EIN 900012735 · Headquarters: Rocky River, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Sigma Theta Tau International Inc

    EIN 900656443 · Headquarters: North Canton, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Sigma Theta Tau International Inc

    EIN 911935291 · Headquarters: Hamilton, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Sigma Theta Tau International Inc

    EIN 911935316 · Headquarters: Cincinnati, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  70. Sigma Theta Tau International Inc

    EIN 912039512 · Headquarters: Canton, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  71. Sigma Thetq Tau Inc

    EIN 311309948 · Headquarters: Athens, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Sigma Xi Scientific Research Society Cwru Chapter

    EIN 010901265 · Headquarters: Shaker Heights, OH, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  73. Sigma Xi the Scientific Research Society

    EIN 264462854 · Headquarters: OBERLIN, OH, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  74. Sikh Education and Religious Foundation

    EIN 311134953 · Headquarters: DUBLIN, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Silver Gloves Association of America

    EIN 363347318 · Headquarters: WAUSEON, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Silver Kings of Yesteryear T

    EIN 341646298 · Headquarters: Bucyrus, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Silver Lake Estates

    EIN 340660207 · Headquarters: CUYAHOGA FALLS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Silver Lining Cancer Fund Inc C/o Cancer Care Center

    EIN 341209953 · Headquarters: CANFIELD, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  79. Simmental Breeders Sweepstakes Inc

    EIN 611081512 · Headquarters: AKRON, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  80. Simmons Hubert Trust

    EIN 316264628 · Headquarters: MARIETTA, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  81. Simon Kenton Council Boy Scouts of America

    EIN 314388520 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. Simon Outreach Services Inc

    EIN 341383325 · Headquarters: Oregon, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Simone Beverly

    EIN 820713784 · Headquarters: Columbus, OH, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  84. Simply For Women

    EIN 933609423 · Headquarters: South Solon, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Simply Living

    EIN 311365264 · Headquarters: Worthington, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Simply Pygmies Plus 2022

    EIN 882871861 · Headquarters: Hillsboro, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Simply Virtual Inc

    EIN 853422016 · Headquarters: STRONGSVILLE, OH, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  88. Simson First Foundation

    EIN 310935291 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  89. Sin City Hash House Harriers and Harrietts

    EIN 471950029 · Headquarters: Cincinnati, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Sincere Hands Llc

    EIN 853590146 · Headquarters: parma, OH, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  91. Sing Don't Fight Foundation

    EIN 934436086 · Headquarters: AKRON, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  92. Singer John Stephen Foundation

    EIN 510203748 · Headquarters: CINCINNATI, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  93. Single Payer Action Network Ohio Co Kurt Bateman

    EIN 341946311 · Headquarters: COLUMBUS, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  94. Singleton's Care Inc Singleton's Care Inc

    EIN 341320456 · Headquarters: MIDDLEFIELD, OH, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  95. Sioux Falls Greater South Dakota Alumni Chapter

    EIN 932173396 · Headquarters: Oxford, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  96. Sioux Tribe 128 Improved Order of Redmen

    EIN 311236030 · Headquarters: Columbus, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  97. Siracc Inc

    EIN 812553241 · Headquarters: Cincinnati, OH, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  98. Sisler Mcfawn Foundation Pfdn

    EIN 346508111 · Headquarters: BROOKLYN, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  99. Sista Girls Corporation the Queen Within

    EIN 352370849 · Headquarters: CINCINNATI, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  100. Sister Cities Association of Mansfi

    EIN 341558548 · Headquarters: MANSFIELD, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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