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. Alpha Omicron Pi Fraternity Inc

    EIN 333950262 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Alpha Omicron Pi Fraternity Inc

    EIN 341909882 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  3. Alpha Omicron Pi Fraternity Inc

    EIN 346609166 · Headquarters: Maumee, OH, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  4. Alpha Omicron Pi Fraternity Inc

    EIN 351404249 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Alpha Omicron Pi Fraternity Inc

    EIN 352271579 · Headquarters: terre haute, IN, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  6. Alpha Omicron Pi Fraternity Inc

    EIN 352291735 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  7. Alpha Omicron Pi Fraternity Inc

    EIN 352312633 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  8. Alpha Omicron Pi Fraternity Inc

    EIN 352312647 · Headquarters: Phenix City, AL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  9. Alpha Omicron Pi Fraternity Inc

    EIN 352317432 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  10. Alpha Omicron Pi Fraternity Inc

    EIN 352336170 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Alpha Omicron Pi Fraternity Inc

    EIN 352361845 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Alpha Omicron Pi Fraternity Inc

    EIN 352379913 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Alpha Omicron Pi Fraternity Inc

    EIN 356021754 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Alpha Omicron Pi Fraternity Inc

    EIN 356022575 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  15. Alpha Omicron Pi Fraternity Inc

    EIN 356037105 · Headquarters: Muncie, IN, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  16. Alpha Omicron Pi Fraternity Inc

    EIN 356042299 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  17. Alpha Omicron Pi Fraternity Inc

    EIN 356043904 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Alpha Omicron Pi Fraternity Inc

    EIN 356056277 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  19. Alpha Omicron Pi Fraternity Inc

    EIN 356065247 · Headquarters: West Lafayette, IN, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  20. Alpha Omicron Pi Fraternity Inc

    EIN 363377896 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  21. Alpha Omicron Pi Fraternity Inc

    EIN 363459586 · Headquarters: Lake Forest, IL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  22. Alpha Omicron Pi Fraternity Inc

    EIN 364080691 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  23. Alpha Omicron Pi Fraternity Inc

    EIN 364603709 · Headquarters: Pendleton, IN, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  24. Alpha Omicron Pi Fraternity Inc

    EIN 364610969 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  25. Alpha Omicron Pi Fraternity Inc

    EIN 364641700 · Headquarters: Clemmons, NC, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  26. Alpha Omicron Pi Fraternity Inc

    EIN 364645016 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Alpha Omicron Pi Fraternity Inc

    EIN 364662939 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Alpha Omicron Pi Fraternity Inc

    EIN 364662944 · Headquarters: Quincy, MA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  29. Alpha Omicron Pi Fraternity Inc

    EIN 364663057 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Alpha Omicron Pi Fraternity Inc

    EIN 364669828 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Alpha Omicron Pi Fraternity Inc

    EIN 366079824 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Alpha Omicron Pi Fraternity Inc

    EIN 366110014 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Alpha Omicron Pi Fraternity Inc

    EIN 366139714 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Alpha Omicron Pi Fraternity Inc

    EIN 371383689 · Headquarters: Quincy, IL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  35. Alpha Omicron Pi Fraternity Inc

    EIN 371390535 · Headquarters: Quincy, IL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  36. Alpha Omicron Pi Fraternity Inc

    EIN 371571404 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Alpha Omicron Pi Fraternity Inc

    EIN 371571557 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Alpha Omicron Pi Fraternity Inc

    EIN 371586173 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  39. Alpha Omicron Pi Fraternity Inc

    EIN 376061823 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Alpha Omicron Pi Fraternity Inc

    EIN 382912240 · Headquarters: Zeeland, MI, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  41. Alpha Omicron Pi Fraternity Inc

    EIN 383752879 · Headquarters: La Verne, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  42. Alpha Omicron Pi Fraternity Inc

    EIN 383788102 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Alpha Omicron Pi Fraternity Inc

    EIN 383806742 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  44. Alpha Omicron Pi Fraternity Inc

    EIN 386090748 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Alpha Omicron Pi Fraternity Inc

    EIN 386118730 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Alpha Omicron Pi Fraternity Inc

    EIN 391711427 · Headquarters: River Falls, WI, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  47. Alpha Omicron Pi Fraternity Inc

    EIN 391893685 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Alpha Omicron Pi Fraternity Inc

    EIN 396078364 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Alpha Omicron Pi Fraternity Inc

    EIN 416040756 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Alpha Omicron Pi Fraternity Inc

    EIN 421051931 · Headquarters: Cedar Rapids, IA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  51. Alpha Omicron Pi Fraternity Inc

    EIN 426090024 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  52. Alpha Omicron Pi Fraternity Inc

    EIN 436068478 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Alpha Omicron Pi Fraternity Inc

    EIN 454038914 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Alpha Omicron Pi Fraternity Inc

    EIN 454897086 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Alpha Omicron Pi Fraternity Inc

    EIN 454929377 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  56. Alpha Omicron Pi Fraternity Inc

    EIN 455179025 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Alpha Omicron Pi Fraternity Inc

    EIN 460474128 · Headquarters: Long Beach, CA, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  58. Alpha Omicron Pi Fraternity Inc

    EIN 460569433 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Alpha Omicron Pi Fraternity Inc

    EIN 461064727 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Alpha Omicron Pi Fraternity Inc

    EIN 461244207 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Alpha Omicron Pi Fraternity Inc

    EIN 463105917 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Alpha Omicron Pi Fraternity Inc

    EIN 463541753 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  63. Alpha Omicron Pi Fraternity Inc

    EIN 463587410 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Alpha Omicron Pi Fraternity Inc

    EIN 463765892 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Alpha Omicron Pi Fraternity Inc

    EIN 464781240 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Alpha Omicron Pi Fraternity Inc

    EIN 465680490 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Alpha Omicron Pi Fraternity Inc

    EIN 470814205 · Headquarters: San Antonio, TX, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  68. Alpha Omicron Pi Fraternity Inc

    EIN 473352961 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Alpha Omicron Pi Fraternity Inc

    EIN 473372982 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Alpha Omicron Pi Fraternity Inc

    EIN 474486256 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Alpha Omicron Pi Fraternity Inc

    EIN 476032500 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Alpha Omicron Pi Fraternity Inc

    EIN 476033085 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Alpha Omicron Pi Fraternity Inc

    EIN 510136481 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Alpha Omicron Pi Fraternity Inc

    EIN 510145885 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Alpha Omicron Pi Fraternity Inc

    EIN 510156774 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Alpha Omicron Pi Fraternity Inc

    EIN 510168350 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  77. Alpha Omicron Pi Fraternity Inc

    EIN 510626868 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Alpha Omicron Pi Fraternity Inc

    EIN 521067065 · Headquarters: Newark, DE, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  79. Alpha Omicron Pi Fraternity Inc

    EIN 521830878 · Headquarters: River Falls, WI, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  80. Alpha Omicron Pi Fraternity Inc

    EIN 522454465 · Headquarters: Philadelphia, PA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  81. Alpha Omicron Pi Fraternity Inc

    EIN 526047089 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Alpha Omicron Pi Fraternity Inc

    EIN 541227053 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Alpha Omicron Pi Fraternity Inc

    EIN 542080117 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Alpha Omicron Pi Fraternity Inc

    EIN 546052649 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Alpha Omicron Pi Fraternity Inc

    EIN 561244888 · Headquarters: Vienna, VA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  86. Alpha Omicron Pi Fraternity Inc

    EIN 561536463 · Headquarters: Elon, NC, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  87. Alpha Omicron Pi Fraternity Inc

    EIN 561560713 · Headquarters: Richmond, VA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  88. Alpha Omicron Pi Fraternity Inc

    EIN 561904902 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Alpha Omicron Pi Fraternity Inc

    EIN 562011746 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  90. Alpha Omicron Pi Fraternity Inc

    EIN 562572661 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  91. Alpha Omicron Pi Fraternity Inc

    EIN 571091124 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Alpha Omicron Pi Fraternity Inc

    EIN 581750325 · Headquarters: Flowery Branch, GA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  93. Alpha Omicron Pi Fraternity Inc

    EIN 582579123 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  94. Alpha Omicron Pi Fraternity Inc

    EIN 582614249 · Headquarters: Miami, FL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  95. Alpha Omicron Pi Fraternity Inc

    EIN 586055905 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Alpha Omicron Pi Fraternity Inc

    EIN 593542561 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Alpha Omicron Pi Fraternity Inc

    EIN 593796322 · Headquarters: Brentwood, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Alpha Omicron Pi Fraternity Inc

    EIN 596144062 · Headquarters: Lakeland, FL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  99. Alpha Omicron Pi Fraternity Inc

    EIN 610847225 · Headquarters: Murray, KY, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  100. Alpha Omicron Pi Fraternity Inc

    EIN 611102879 · Headquarters: Lexington, KY, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

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