Nonprofits in Maryland

Nonprofits in Maryland. Browse 47,413 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 Guild of Organists

    EIN 522360787 · Headquarters: Callaway, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  2. American Guild of Organists Ago

    EIN 237375419 · Headquarters: Germantown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. American Guild of Organists Ago

    EIN 521256952 · Headquarters: UPPER MARLBORO, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. American Guild of Organists Ago

    EIN 521680463 · Headquarters: Middletown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. American Harp Society

    EIN 270263237 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. American Harp Society

    EIN 521085760 · Headquarters: Ft Meade, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. American Harp Society

    EIN 870940045 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. American Healing Arts Alliance Inc

    EIN 521978775 · Headquarters: Edgewater, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. American Herbal Products Association

    EIN 870391960 · Headquarters: Silver Spring, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. American Heritage Defense Corporation Ahdc

    EIN 043722901 · Headquarters: Mitchellville, MD, US · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. American Heritage Society

    EIN 902372990 · Headquarters: Rockville, MD, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  12. American Hiking Society

    EIN 510211993 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. American Hindu World Service Inc

    EIN 320337693 · Headquarters: Fulton, MD, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. American Holistic Veterinary Medical Foundation Inc

    EIN 261583307 · Headquarters: COLUMBIA, MD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. American Homes Creation Service Inc

    EIN 800341705 · Headquarters: KENSINGTON, MD, USA · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  16. American Honors Foundation

    EIN 462661491 · Headquarters: Potomac, MD, USA · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  17. American Hospice Foundation

    EIN 521823611 · Headquarters: CHEVY CHASE, MD, USA · Health Care · Latest available filing year: 2014 · Primary form: IRS Form 990

  18. American Humanist Association

    EIN 471362290 · Headquarters: OWINGS MILLS, MD, US · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  19. American Humanist Society Anne Arundel Co Secular Humanist

    EIN 920853214 · Headquarters: Edgewater, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  20. American Humanitarian Charity

    EIN 821002683 · Headquarters: Riverdale, MD, US · Human Services · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  21. American Hungarian Educators Association

    EIN 237454055 · Headquarters: Oakland, MD, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. American Indian Heritage and Education Association Inc

    EIN 680549486 · Headquarters: Gaithersburg, MD, US · Employment · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  23. American Indian Inter Tribal Cultural Organization Inc

    EIN 521567302 · Headquarters: Rockville, MD, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  24. American Indian Ministries Aka Inte Rnational Indian Ministries Aka My

    EIN 521557587 · Headquarters: SAVAGE, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  25. American Industrial Hygiene Association

    EIN 550685540 · Headquarters: Rockville, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. American Industrial Hygiene Asssociation

    EIN 311254237 · Headquarters: Pasadena, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. American Infidels Veterans Motorcycle Club Maryland

    EIN 932014216 · Headquarters: Frederick, MD, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. American Inns of Court Foundation

    EIN 271358692 · Headquarters: La Plata, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. American Inns of Court Foundation

    EIN 521638680 · Headquarters: Rockville, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. American Inns of Court Foundation

    EIN 521638681 · Headquarters: Greenbelt, MD, US · Crime & Legal Related · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  31. American Inns of Court Foundation

    EIN 521638686 · Headquarters: Catonsville, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. American Inns of Court Foundation

    EIN 521638689 · Headquarters: Annapolis, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. American Inns of Court Foundation

    EIN 521687404 · Headquarters: Annapolis, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. American Inns of Court Foundation

    EIN 882916886 · Headquarters: Ellicott City, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. American Institute for Apprenticeship

    EIN 832787603 · Headquarters: Chevy Chase, MD, US · Public & Societal Benefit · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  36. American Institute for Urban Psychological Studies

    EIN 521831069 · Headquarters: BALTIMORE, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. American Institute of Aeronautics and Astronautics

    EIN 521734308 · Headquarters: Elkton, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. American Institute of Architects Inc

    EIN 237017050 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  39. American Institute of Chemical Engineers

    EIN 526050841 · Headquarters: ESSEX, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. American Institute of Chemical Engineers

    EIN 911873434 · Headquarters: Elkton, MD, US · Science & Technology · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  41. American Institute of Graphic Arts

    EIN 320083953 · Headquarters: Frederick, MD, US · Arts, Culture & Humanities · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  42. American Institute of Graphic Arts

    EIN 521600891 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  43. American Institute of Integrated Thought

    EIN 934418586 · Headquarters: Lanham, MD, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. American Institute of Parliamentarians

    EIN 521776278 · Headquarters: Bowie, MD, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  45. American Institute of Physics Inc

    EIN 131667053 · Headquarters: COLLEGE PARK, MD, USA · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. American Institute of Saddle Fitting Ltd

    EIN 010710235 · Headquarters: HAGERSTOWN, MD, US · Animal Related · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  47. American Institute of Ultrasound in Medicine

    EIN 237148063 · Headquarters: LAUREL, MD, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. American Institute of Urban and Regional Affairs

    EIN 522114893 · Headquarters: FREDERICK, MD, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  49. American International School of Bucharest Foundation Inc

    EIN 510395887 · Headquarters: Bethesda, MD, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. American Iris Society

    EIN 471111514 · Headquarters: Easton, MD, US · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. American Iris Society

    EIN 521365611 · Headquarters: Aberdeen, MD, US · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. American Islamic Ministry and Community Services Corporation

    EIN 820864144 · Headquarters: PARKVILLE, MD, US · Human Services · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  53. American Israel Numismatic Association Inc

    EIN 237069394 · Headquarters: SILVER SPRING, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. American Jail Association

    EIN 521245173 · Headquarters: HAGERSTOWN, MD, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. American Jewish Society for Service Inc

    EIN 136144216 · Headquarters: BETHESDA, MD, USA · Youth Development · Latest available filing year: 2016 · Primary form: IRS Form 990

  56. American Justice Re-entry and Rehabilitation Inc

    EIN 473502467 · Headquarters: Upper Marlboro, MD, US · Crime & Legal Related · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  57. American Kidney Fund

    EIN 237124261 · Headquarters: ROCKVILLE, MD, United States · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  58. American Kidney Fund Service Organization

    EIN 300013495 · Headquarters: ROCKVILLE, MD, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  59. American Landscape Institute Inc

    EIN 364860196 · Headquarters: MONKTON, MD, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  60. American Latvian Association in the Unit

    EIN 530215408 · Headquarters: ROCKVILLE, MD, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. American Leadership Foundation Inc

    EIN 843261541 · Headquarters: OAKLAND, MD, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  62. American Legion

    EIN 237174767 · Headquarters: BELTSVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  63. American Legion

    EIN 271724124 · Headquarters: Columbia, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. American Legion

    EIN 473485246 · Headquarters: Bowie, MD, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  65. American Legion

    EIN 510522995 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. American Legion

    EIN 510522999 · Headquarters: BALTIMORE, MD, US · Public & Societal Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  67. American Legion

    EIN 520556591 · Headquarters: Laurel, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. American Legion

    EIN 520578500 · Headquarters: Marriottsville, MD, US · Public & Societal Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  69. American Legion

    EIN 520592021 · Headquarters: COLMAR MANOR, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  70. American Legion

    EIN 520824635 · Headquarters: Bowie, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  71. American Legion

    EIN 520845941 · Headquarters: Cheverly, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. American Legion

    EIN 520965325 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  73. American Legion

    EIN 521182986 · Headquarters: Baltimore, MD, US · Public & Societal Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  74. American Legion

    EIN 521286075 · Headquarters: OLNEY, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. American Legion

    EIN 521299542 · Headquarters: Germantown, MD, US · Public & Societal Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  76. American Legion

    EIN 521676703 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  77. American Legion

    EIN 526047127 · Headquarters: Baltimore, MD, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. American Legion

    EIN 526056330 · Headquarters: CHESTERTOWN, MD, US · Public & Societal Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  79. American Legion

    EIN 526059617 · Headquarters: District Heights, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  80. American Legion

    EIN 526077887 · Headquarters: Edgewater, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. American Legion

    EIN 526077905 · Headquarters: Ridgely, MD, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. American Legion

    EIN 526077906 · Headquarters: Sudlersville, MD, US · Public & Societal Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  83. American Legion

    EIN 526077908 · Headquarters: Barton, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  84. American Legion

    EIN 526077937 · Headquarters: Perry Hall, MD, US · Public & Societal Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  85. American Legion

    EIN 526077946 · Headquarters: UPPER MARLBORO, MD, US · Public & Societal Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  86. American Legion

    EIN 526077958 · Headquarters: Cambridge, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. American Legion

    EIN 526077960 · Headquarters: Huntingtown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. American Legion

    EIN 526077973 · Headquarters: Bel Air, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. American Legion

    EIN 526077982 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. American Legion

    EIN 526078002 · Headquarters: Centreville, MD, US · Public & Societal Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  91. American Legion

    EIN 526078023 · Headquarters: Parkton, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  92. American Legion

    EIN 636063273 · Headquarters: Bethesda, MD, US · Public & Societal Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  93. American Legion

    EIN 853159306 · Headquarters: Galena, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. American Legion

    EIN 853159941 · Headquarters: Owings Mills, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. American Legion

    EIN 853177221 · Headquarters: Upper Marlboro, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. American Legion

    EIN 853195977 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. American Legion

    EIN 853196565 · Headquarters: Cumberland, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. American Legion

    EIN 853196934 · Headquarters: Lexington Park, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. American Legion

    EIN 992995770 · Headquarters: Port Deposit, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. American Legion #16 Stanley Cochrane

    EIN 520701347 · Headquarters: CRISFIELD, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

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