Unknown & Unclassified nonprofits in Maryland

Unknown & Unclassified nonprofits in Maryland. Browse 10,672 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. America Reads the Mueller Report

    EIN 842470565 · Headquarters: HAGERSTOWN, MD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  2. American Academy of Appellate Lawyers

    EIN 650250632 · Headquarters: ROCKVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. American Academy of Environmental Engineers and Scientists Inc

    EIN 221687990 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. American Academy of Matrimonial Lawyers

    EIN 521823390 · Headquarters: Annapolis, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. American Academy of Pain Medicine

    EIN 363874208 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. American Advancement

    EIN 824871132 · Headquarters: Hyattsville, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. American Airborne Association Inc

    EIN 522035008 · Headquarters: New Windsor, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  8. American Art Therapy Association Inc

    EIN 522095882 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. American Association for Psychoanalysis in Clinical Social Work Inc

    EIN 133739506 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  10. American Association of Bank Directors

    EIN 521917267 · Headquarters: Darnestown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. American Association of Colleges of Osteopathic Medicine

    EIN 237190271 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. American Association of Colleges of Podiatric Medicine

    EIN 520854283 · Headquarters: ROCKVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. American Association of Healthcare Management - 13 Maryland Chapter

    EIN 521037659 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  14. American Association of Obstetricians and Gynecologists Foundation Inc

    EIN 386042799 · Headquarters: FOREST HILL, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. American Association of State Compensation Insurance Funds

    EIN 510144252 · Headquarters: ROCKVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. American Association of University Professors

    EIN 521772164 · Headquarters: Takoma Park, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  17. American Association of University Women

    EIN 237328887 · Headquarters: Rockville, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. American Association of University Women

    EIN 520277065 · Headquarters: Sykeville, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. American Association of University Women

    EIN 521940900 · Headquarters: Easton, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. American Association of University Women

    EIN 526041924 · Headquarters: McHenry, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. American Association of University Women

    EIN 526054379 · Headquarters: Kensington, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. American Association of University Women

    EIN 526054380 · Headquarters: Adamstown, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  23. American Association of University Women

    EIN 526055242 · Headquarters: Aberdeen, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. American Association of University Women

    EIN 526075631 · Headquarters: Annapolis, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. American Association of University Women

    EIN 526083468 · Headquarters: Glenelg, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. American Association of Zoo Keepers

    EIN 521698808 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. American Association of Zoo Keepers

    EIN 562577254 · Headquarters: Millersville, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. American Association on Intellectual and Developmental Disabilities

    EIN 060636098 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. American Automotive Leasing Association

    EIN 362548298 · Headquarters: OWINGS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. American Beauty Temple 476

    EIN 933543382 · Headquarters: Upper Marlboro, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. American Beverage Licensees

    EIN 042136056 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. American Board of Dental Examiners

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

  33. American Board of Orofacial Pain

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

  34. 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

  35. American Boat & Yacht Council Inc

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

  36. American Brittany Club Inc

    EIN 274658508 · Headquarters: ridgely, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  37. American Catholic Historical Association

    EIN 526041154 · Headquarters: EMMITSBURG, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  38. American Chemical Society

    EIN 526055359 · Headquarters: Frostburg, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. American Childhood Cancer Organizat

    EIN 521071826 · Headquarters: KENSINGTON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. American Chinese Pharmaceutical Association

    EIN 232575771 · Headquarters: Rockville, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. American Chinese School Inc

    EIN 830403420 · Headquarters: Silver Spring, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  42. American Civil Liberties Union of Maryland

    EIN 520746271 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. American College Dance Association Inc

    EIN 237359759 · Headquarters: SEVERNA PARK, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. American College Health Foundation

    EIN 521746232 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. American College of Dentist

    EIN 521415952 · Headquarters: ROCKVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. American College of Dentists

    EIN 521376657 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. American College of Dentists Foundation

    EIN 237222977 · Headquarters: ROCKVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  48. American College of Dentists Inc

    EIN 520907692 · Headquarters: ROCKVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  49. American College of Medical Genetics and Genomics

    EIN 521774227 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. American College of Mortgage Attorneys Inc

    EIN 237402873 · Headquarters: ROCKVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. American College of Radiology Inc DC Metropolitan Area Chapter

    EIN 237321563 · Headquarters: Sykesville, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  52. American College of Veterinary Surgeons

    EIN 237143276 · Headquarters: GERMANTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. American Concrete Institute Inc

    EIN 521301494 · Headquarters: Bel Air, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  54. American Corriedale Association Inc

    EIN 430639032 · Headquarters: Federalsburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. American Cuemakers Association

    EIN 742648599 · Headquarters: Poolesville, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  56. American Debate Association Inc

    EIN 232695441 · Headquarters: Arnold, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. American Dental Assistants Association

    EIN 821785882 · Headquarters: ROCKVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  58. American Evangelistic Association - Hope Ministries

    EIN 010955564 · Headquarters: SILVER SPRING, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  59. American Federation of Government Employees

    EIN 030180166 · Headquarters: Salisbury, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  60. American Federation of Government Employees

    EIN 133089411 · Headquarters: DISTRICT HTS, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  61. American Federation of Government Employees

    EIN 231982023 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. American Federation of Government Employees

    EIN 263336163 · Headquarters: BETHESDA, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  63. American Federation of Government Employees

    EIN 352469320 · Headquarters: Millersville, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  64. American Federation of Government Employees

    EIN 521038350 · Headquarters: Landover, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. American Federation of Government Employees

    EIN 526054375 · Headquarters: Frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  66. American Federation of Government Employees

    EIN 546069418 · Headquarters: College Park, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  67. American Federation of Government Employees

    EIN 856019112 · Headquarters: Chesapeake City, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. American Federation of Government Employees

    EIN 900525855 · Headquarters: Olney, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  69. American Federation of Government Employees

    EIN 900525991 · Headquarters: College Park, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. American Federation of Government Employees

    EIN 931519854 · Headquarters: Capitol Heights, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. American Federation of Government Employees Aka Afge 3615

    EIN 546145650 · Headquarters: Clinton, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  72. American Federation of Government Employees Aka Afge Local 1923

    EIN 526059793 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. American Federation of Government Employees Local 2782

    EIN 237148583 · Headquarters: SUITLAND, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  74. American Federation of Government Employees Local 3302

    EIN 237174883 · Headquarters: RANDALLSTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  75. American Federation of Government Employees Local 727

    EIN 270415789 · Headquarters: Capitol Heights, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  76. American Federation of Labor & Congress of Industrial Orgs

    EIN 237009955 · Headquarters: Hagerstown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. American Federation of Labor & Congress of Industrial Orgs

    EIN 510285489 · Headquarters: Capitol Heights, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. American Federation of Labor & Congress of Industrial Orgs

    EIN 520694575 · Headquarters: Cumberland, MD, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  79. American Federation of Labor & Congress of Industrial Orgs

    EIN 521610891 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  80. American Federation of Labor & Western Bct Council

    EIN 237014361 · Headquarters: CUMBERLAND, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. American Federation of Musicians of Sdg 40-543 Local 29

    EIN 520424654 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. American Federation of State & County Municipal Em

    EIN 521181802 · Headquarters: CATONSVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  83. American Federation of State County & Municipal Employe

    EIN 526076003 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  84. American Federation of State County & Municipal Employees

    EIN 010953041 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. American Federation of State County & Municipal Employees

    EIN 061828318 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. American Federation of State County & Municipal Employees

    EIN 201666611 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. American Federation of State County & Municipal Employees

    EIN 204182494 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. American Federation of State County & Municipal Employees

    EIN 213381410 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. American Federation of State County & Municipal Employees

    EIN 237059113 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. American Federation of State County & Municipal Employees

    EIN 237102238 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. American Federation of State County & Municipal Employees

    EIN 237102240 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. American Federation of State County & Municipal Employees

    EIN 237102241 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. American Federation of State County & Municipal Employees

    EIN 237118467 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. American Federation of State County & Municipal Employees

    EIN 237118469 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. American Federation of State County & Municipal Employees

    EIN 237196106 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. American Federation of State County & Municipal Employees

    EIN 237208377 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. American Federation of State County & Municipal Employees

    EIN 237208390 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. American Federation of State County & Municipal Employees

    EIN 237335797 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. American Federation of State County & Municipal Employees

    EIN 237453073 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. American Federation of State County & Municipal Employees

    EIN 352569344 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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