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. American Bible Society

    EIN 116325185 · Headquarters: PITTSBURGH, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  2. American Bikers Aiming Towards Education a Group of Concerned

    EIN 742497145 · Headquarters: Ogden, UT, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  3. American Biological Safety Assn

    EIN 742480319 · Headquarters: MUNDELEIN, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  4. American Biomass Energy Association

    EIN 770508798 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. American Black and Tan Association Inc

    EIN 731193515 · Headquarters: WINCHESTER, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. American Black Chiropractic Association

    EIN 431250320 · Headquarters: Houston, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. American Bladesmith Society Inc

    EIN 521383331 · Headquarters: GRAND RAPIDS, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  8. American Blind Bowlers Association Inc

    EIN 363553272 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. American Blind Bowlers Association Inc

    EIN 562028028 · Headquarters: LEWISVILLE, NC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. American Blind Bowling Association Inc

    EIN 391864296 · Headquarters: JANESVILLE, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. American Blind Bowling Association Inc

    EIN 510156677 · Headquarters: West Allis, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  12. American Blind Bowling Association Inc

    EIN 831162160 · Headquarters: Cincinnati, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  13. American Blind Skiing Foundation

    EIN 237291117 · Headquarters: Cary, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. American Blonde Daquitaine Association

    EIN 421016653 · Headquarters: Morris, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. American Bloodhound Club

    EIN 942654091 · Headquarters: CORONA, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. American Blue Cattle Association Inc

    EIN 752259274 · Headquarters: Haworth, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  17. American Boad of Abdominal Surgery

    EIN 042242379 · Headquarters: BURLINGTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  18. American Board for Certification in Orthotics Prosthetics & Pedorthics

    EIN 526054152 · Headquarters: Alexandria, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. American Board for Occupational Health Nurses Inc

    EIN 136567779 · Headquarters: PALOS HEIGHTS, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  20. American Board for Transplant Certification

    EIN 481058372 · Headquarters: Mount Laurel, NJ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. American Board Forensic Anthropology

    EIN 521105233 · Headquarters: WASHIGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  22. American Board of Cardiovascular Medicine

    EIN 992608723 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. American Board of Cardiovascular Perfusion Inc

    EIN 362850496 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. American Board of Certification for Gastroenterology Nurses Inc

    EIN 391514984 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. American Board of Clinical Chemistry

    EIN 526056352 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. American Board of Clinical Neurophysiology

    EIN 237061848 · Headquarters: DENTON, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  27. American Board of Clinical Specialties

    EIN 421718499 · Headquarters: TEMPLE, TX, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  28. American Board of Cosmetic Surgery Inc

    EIN 232625922 · Headquarters: CRETE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. American Board of Criminal Lawyers

    EIN 942535847 · Headquarters: ATLANTA, GA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. American Board of Criminalistics Inc

    EIN 113000406 · Headquarters: Gardiner, ME, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  31. American Board of Dental Examiners

    EIN 520894780 · Headquarters: Linthicum, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. American Board of Dental Public Health

    EIN 636048380 · Headquarters: State College, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  33. American Board of Dental Sleep Medicine

    EIN 262615612 · Headquarters: LISLE, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  34. American Board of Dermatology Inc

    EIN 131549125 · Headquarters: NEWTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. American Board of Emergency Medicine

    EIN 382177886 · Headquarters: East Lansing, MI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. American Board of Endodontics

    EIN 236408246 · Headquarters: BUFFALO GROVE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. American Board of Examiners in Psychodrama Sociometry and Group Psych

    EIN 521069317 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  38. American Board of Eye Surgery Inc

    EIN 752133840 · Headquarters: Apopka, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  39. American Board of Facial Plastic and Reconstructive Surgery Inc

    EIN 581830364 · Headquarters: ALEXANDRIA, VA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  40. American Board of Family Medicine, Inc.

    EIN 430921226 · Headquarters: Lexington, KY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. American Board of Forensic Document Examiners Inc

    EIN 521116657 · Headquarters: Houston, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. American Board of Forensic Odontology Inc

    EIN 521081387 · Headquarters: Colorado Springs, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  43. American Board of Forensic Toxicology Inc

    EIN 521094589 · Headquarters: COLORADO SPGS, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  44. American Board of Functional Medicine

    EIN 274254517 · Headquarters: Vail, AZ, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  45. American Board of General Dentistry

    EIN 363330595 · Headquarters: BELLEAIR BLUFFS, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. American Board of Genetic Counseling Inc

    EIN 521820420 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. American Board of Hair Restoration Surgery Inc

    EIN 364121044 · Headquarters: HOUSTON, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  48. American Board of Homeopathic Medicine

    EIN 431957245 · Headquarters: BLOOMINGDALE, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  49. American Board of Imaging Informatics In

    EIN 260740136 · Headquarters: ST PAUL, MN, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  50. American Board of Internal Medicine

    EIN 390866228 · Headquarters: Philadelphia, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. American Board of Laser Surgery Incorporated

    EIN 391534455 · Headquarters: TRUMBULL, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  52. American Board of Managed Care Medicine Inc

    EIN 541762129 · Headquarters: Glen Allen, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. American Board of Managed Care Nurses

    EIN 541905803 · Headquarters: GLEN ALLEN, VA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  54. American Board of Medical Physics Inc

    EIN 043019620 · Headquarters: SAN ANTONIO, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  55. American Board of Medical Specialties

    EIN 410847713 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. American Board of Multiple Specialties in Podiatry

    EIN 650256541 · Headquarters: TRENTON, NJ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. American Board of Neurological Surgery

    EIN 566067043 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. American Board of Neuroscience Nursing

    EIN 351428888 · Headquarters: Schaumburg, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  59. American Board of Nuclear Medicine

    EIN 132690306 · Headquarters: ST LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. American Board of Ophthalmology

    EIN 231693176 · Headquarters: DOYLESTOWN, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. American Board of Oral &

    EIN 521683468 · Headquarters: OVERLAND PARK, KS, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  62. American Board of Oral and Maxillofacial Surgery

    EIN 420859627 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. American Board of Oral Implantology/implant Dentistry

    EIN 237017438 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. American Board of Oral Pathology

    EIN 356042105 · Headquarters: TAMPA, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. American Board of Orofacial Pain

    EIN 680327057 · Headquarters: OWINGS MILLS, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  66. American Board of Orthodontics

    EIN 916029544 · Headquarters: ST LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. American Board of Orthopaedic Surgery

    EIN 366000057 · Headquarters: CHAPEL HILL, NC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. American Board of Otolaryngology Inc

    EIN 420112626 · Headquarters: HOUSTON, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  69. American Board of Pain Medicine

    EIN 363846839 · Headquarters: ARLINGTON HEIGHTS, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. American Board of Pediatric Neurological Surgery Inc

    EIN 311331702 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  71. American Board of Perianesthesia Nursing Certification Inc

    EIN 510286953 · Headquarters: NEW YORK, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. American Board of Physical Medicine and Rehabilitation

    EIN 416029315 · Headquarters: ROCHESTER, MN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. American Board of Podiatric Medicine

    EIN 943186276 · Headquarters: Hermosa Beach, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. American Board of Podiatric Surgery Inc

    EIN 521021963 · Headquarters: San Francisco, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. American Board of Post-acute and Long-term Care Medicine Inc

    EIN 521920740 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  76. American Board of Preventive Medicine

    EIN 236298444 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. American Board of Professional Liability Attorneys

    EIN 382144044 · Headquarters: CHARLESTON, SC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  78. American Board of Professional Neuropsychology

    EIN 841230180 · Headquarters: ASHLAND, KY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  79. American Board of Professional Psychology

    EIN 370817161 · Headquarters: CHAPEL HILL, NC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. American Board of Prosthodontics

    EIN 741486867 · Headquarters: MINNEAPOLIS, MN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. American Board of Psychiatry and Neurology

    EIN 410654864 · Headquarters: Deerfield, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  82. American Board of Quality Assurance and Utilization Review Physicians Inc

    EIN 232110723 · Headquarters: New Port Richey, FL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  83. American Board of Science in Nuclear Medicine Inc

    EIN 720822936 · Headquarters: Kernersville, NC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. American Board of Spine Surgery Inc

    EIN 330751630 · Headquarters: RIVERSIDE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  85. American Board of Thoracic Surgery

    EIN 364111028 · Headquarters: Chicago, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. American Board of Toxicology Inc

    EIN 521162552 · Headquarters: RALEIGH, NC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. American Board of Trial Advocates

    EIN 952504030 · Headquarters: Dallas, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. American Board of Trial Advocates - Chapters

    EIN 954216564 · Headquarters: Dallas, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  89. American Board of Urology

    EIN 410857968 · Headquarters: CHARLOTTESVILLE, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. American Board of Veterinary Practitioners Inc

    EIN 161128973 · Headquarters: MT JULIET, TN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. American Board of Vocational Experts Inc

    EIN 481094353 · Headquarters: RALEIGH, NC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. American Board of Wound Management

    EIN 650584679 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. American Board Vascular Surgery Inc

    EIN 820556907 · Headquarters: Hobe Sound, FL, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  94. American Boat & Yacht Council Inc

    EIN 131939929 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990

  95. American Boat Builders and Repairer Association Inc

    EIN 136162913 · Headquarters: WARREN, RI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  96. American Boer Goat Association

    EIN 752575202 · Headquarters: SAN ANGELO, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  97. American Boiler Manufacturers Associatio

    EIN 546145055 · Headquarters: VIENNA, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. American Book Producers Association Inc

    EIN 133667013 · Headquarters: NEW YORK, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  99. American Border Collie Association Inc

    EIN 640701346 · Headquarters: PINE MOUNTAIN, GA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. American Boxer Club Inc

    EIN 132572654 · Headquarters: RICHMOND, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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