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. Maryland Society of Eye Physicians & Surgeons Inc

    EIN 521284530 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Maryland Society of Integrative Medicine Inc

    EIN 831241210 · Headquarters: GAITHERSBURG, MD, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. Maryland Society of Interventional Pain Physicians Inc

    EIN 593764444 · Headquarters: ANNAPOLIS, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Maryland Society of Licensed Tree Experts Inc

    EIN 262096424 · Headquarters: Beltsville, MD, US · Employment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  5. Maryland Society of Medical Acupuncture

    EIN 571182977 · Headquarters: Lutherville, MD, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  6. Maryland Society of Oral & Maxillofacial Surgeons Inc

    EIN 200771226 · Headquarters: ROCKVILLE, MD, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  7. Maryland Society of Otolaryngology Incorporated

    EIN 510216689 · Headquarters: Owings Mills, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  8. Maryland Society of Pathologists Incorporated

    EIN 520902539 · Headquarters: Baltimore, MD, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  9. Maryland Society of Physical Medicine & Rehabilitation

    EIN 260028779 · Headquarters: Baltimore, MD, US · Health Care · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  10. Maryland Society of Portrait Painters Inc

    EIN 261445809 · Headquarters: Arnold, MD, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. Maryland Society of Professional Engineers

    EIN 526074236 · Headquarters: ELKRIDGE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  12. Maryland Society of Radiologic Technologists Inc

    EIN 526056052 · Headquarters: DERWOOD, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Maryland Softball Club

    EIN 392817328 · Headquarters: Clarksburg, MD, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Maryland South Africa Sister State Committee Inc

    EIN 921753142 · Headquarters: Silver Spring, MD, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  15. Maryland Soybean Board

    EIN 521214909 · Headquarters: Cordova, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  16. Maryland Space Business Roundtable Inc

    EIN 521704254 · Headquarters: NEW WINDSOR, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Maryland Spiders Sports Inc

    EIN 510571547 · Headquarters: Glen Burnie, MD, US · Recreation & Sports · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  18. Maryland Sport Services Inc

    EIN 205495281 · Headquarters: Jessup, MD, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Maryland Sporting Clays Assn Inc

    EIN 522001359 · Headquarters: Henderson, MD, US · Recreation & Sports · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  20. Maryland Sporting Dog Association Inc

    EIN 824256587 · Headquarters: Westminster, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  21. Maryland Sports Unlimited Inc

    EIN 201026607 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  22. Maryland Sportsmens Foundation

    EIN 463750636 · Headquarters: Annapolis, MD, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  23. Maryland Standardbred Horsemen's Assistance Fund Inc

    EIN 522345300 · Headquarters: TEMPLE HILLS, MD, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Maryland State & DC AFL-CIO

    EIN 520691752 · Headquarters: Annapolis, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Maryland State & Dist of Columbia Bldg & Construction Trades Cncl

    EIN 521653273 · Headquarters: Upper Marlboro, MD, US · Science & Technology · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  26. Maryland State Affiliate of Acnm Inc

    EIN 521328955 · Headquarters: College Park, MD, US · Health Care · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  27. Maryland State Affiliate of Acnm Inc

    EIN 900624556 · Headquarters: Baltimore, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Maryland State Animal Response Team Inc

    EIN 571221456 · Headquarters: College Park, MD, US · Animal Related · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  29. Maryland State Assembly of the Asso

    EIN 200260973 · Headquarters: North Potomac, MD, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Maryland State Association of Baseball Coaches Inc

    EIN 272829777 · Headquarters: Essex, MD, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  31. Maryland State Athletic Directors Association Inc

    EIN 521611547 · Headquarters: COLUMBIA, MD, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  32. Maryland State Athletic Hall of Fame Inc

    EIN 455184666 · Headquarters: PARKVILLE, MD, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Maryland State Bar Association Inc

    EIN 520815403 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Maryland State Baseball Association Inc

    EIN 521191000 · Headquarters: Bowie, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  35. Maryland State Beauty Culturist Assoc

    EIN 300734017 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  36. Maryland State Beekeepers Association Inc

    EIN 521887350 · Headquarters: Easton, MD, US · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Maryland State Builders Association Inc

    EIN 526066687 · Headquarters: FULTON, MD, USA · Community Improvement & Capacity Building · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  38. Maryland State Chapter Womens Council of Realtors

    EIN 800400589 · Headquarters: Bowie, MD, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  39. Maryland State Child Care Association Inc

    EIN 521398476 · Headquarters: ANNAPOLIS, MD, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. Maryland State Council of the Emergency Nurses Association

    EIN 363240424 · Headquarters: GAITHERSBURG, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Maryland State Council of the Emergency Nurses Association Inc

    EIN 521256130 · Headquarters: Gaithersburg, MD, US · Health Care · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  42. Maryland State Council of the Emergency Nurses Association Inc

    EIN 521517725 · Headquarters: Stevensville, MD, US · Health Care · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  43. Maryland State Council of the Knights of Columbis

    EIN 520985836 · Headquarters: Bowie, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Maryland State Dental Association Inc

    EIN 526041784 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  45. Maryland State Division of the Izaak Walton League of America

    EIN 521217637 · Headquarters: Gaithersburg, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  46. Maryland State Education Association

    EIN 520607919 · Headquarters: Annapolis, MD, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Maryland State Education Association Organization

    EIN 823150729 · Headquarters: Annapolis, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  48. Maryland State Fair & Agricultural Society Inc

    EIN 520590244 · Headquarters: TIMONIUM, MD, USA · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990

  49. Maryland State Family Child Care Association Inc

    EIN 521579040 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Maryland State Fire Marshal Alumni Association

    EIN 833855609 · Headquarters: Pikesville, MD, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Maryland State Game and Fish Protective Association Inc

    EIN 810570116 · Headquarters: Perry Hall, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  52. Maryland State Geographic Information Committee Ltd

    EIN 455200482 · Headquarters: Crownsville, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  53. Maryland State Golf Association

    EIN 521326177 · Headquarters: Lutherville, MD, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990

  54. Maryland State Grange Foundation Inc

    EIN 932105608 · Headquarters: Hagerstown, MD, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Maryland State Grange Inc

    EIN 520682433 · Headquarters: Hagerstown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Maryland State Guard Foundation Inc

    EIN 462283063 · Headquarters: UPPR MARLBORO, MD, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Maryland State Gym Booster Club Incorporated

    EIN 452629591 · Headquarters: UPPR MARLBORO, MD, US · Education · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  58. Maryland State Horticultural Society Inc

    EIN 237089698 · Headquarters: Thurmont, MD, US · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Maryland State Licensed Beverage Association Inc

    EIN 520699684 · Headquarters: Westminster, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Maryland State Lodge Sons of Italy Foundation Inc

    EIN 521366924 · Headquarters: Perry Hall, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  61. Maryland State Music Teachers Association Inc

    EIN 526081615 · Headquarters: Frederick, MD, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  62. Maryland State Numismatic Association Inc

    EIN 743092527 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  63. Maryland State Perfusion Society Inc

    EIN 263111211 · Headquarters: Olney, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Maryland State Pipe Trades Association

    EIN 522081390 · Headquarters: COLUMBIA, MD, USA · Community Improvement & Capacity Building · Latest available filing year: 2018 · Primary form: IRS Form 990

  65. Maryland State Police Alumni Inc

    EIN 522129072 · Headquarters: Rhodesdale, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Maryland State Quarter Horse Association Inc

    EIN 521572969 · Headquarters: Boonsboro, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Maryland State Society of Orthodontists Inc

    EIN 453221195 · Headquarters: Annapolis, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  68. Maryland State Society of the Daughters of the American Revolution

    EIN 526041290 · Headquarters: BALTIMORE, MD, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990

  69. Maryland State Squash Racquets Assoc Inc

    EIN 521286519 · Headquarters: LUTHERVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. Maryland State Steering Committee for Occupational Therapy &

    EIN 510577699 · Headquarters: Mount Airy, MD, US · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  71. Maryland State Supervisors of Mdot

    EIN 412715087 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Maryland State Surgical Association Inc

    EIN 651254335 · Headquarters: Ellicott City, MD, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  73. Maryland State Taekwondo Association Inc

    EIN 943446736 · Headquarters: BEL AIR, MD, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  74. Maryland State Tigers Youth Development

    EIN 464968671 · Headquarters: Bowie, MD, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Maryland State Troopers Association

    EIN 521937933 · Headquarters: LAVALE, MD, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Maryland State Wrestling AssociationInc

    EIN 521426238 · Headquarters: Baltimore, MD, USA · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990

  77. Maryland State Youth Soccer Association Inc

    EIN 521349858 · Headquarters: GLENWOOD, MD, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Maryland States Attorneys Association Incorporated

    EIN 520909427 · Headquarters: ELLICOTT CITY, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Maryland Steel Pan Association Inc

    EIN 921867051 · Headquarters: Catonsville, MD, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Maryland Steeplechase Association Inc

    EIN 743115569 · Headquarters: BROOKLANDVILLE, MD, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  81. Maryland STEM Festival Inc

    EIN 823713609 · Headquarters: Columbia, MD, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  82. Maryland Sting B&g Inc

    EIN 461817123 · Headquarters: Columbia, MD, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Maryland Sting Inc

    EIN 208333702 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  84. Maryland Stingers Rugby

    EIN 824235375 · Headquarters: COCKEYSVILLE, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Maryland Stock Car Racing Hall of Fame

    EIN 994910945 · Headquarters: Odenton, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Maryland Stream Restoration Association

    EIN 262223076 · Headquarters: Gambrills, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Maryland Student Hockey League Inc

    EIN 452543361 · Headquarters: Laurel, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Maryland Student Legislature Incorporated

    EIN 521764998 · Headquarters: Baltimore, MD, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Maryland Suburban Chapter of Narpm Inc

    EIN 680503614 · Headquarters: Myersville, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Maryland Symphony Orchestra Guild Inc

    EIN 521369196 · Headquarters: Hagerstown, MD, US · Arts, Culture & Humanities · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  91. Maryland Symphony Orchestra Inc

    EIN 521259358 · Headquarters: HAGERSTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. Maryland Table Tennis Association Inc

    EIN 521275636 · Headquarters: ELLICOTT CITY, MD, US · Recreation & Sports · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  93. Maryland Tactical Officers Association Inc

    EIN 471684682 · Headquarters: Baltimore, MD, US · Crime & Legal Related · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  94. Maryland Tamil Academy Inc

    EIN 460900347 · Headquarters: CLARKSBURG, MD, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  95. Maryland Tax Education Foundation Inc

    EIN 522065072 · Headquarters: Rockville, MD, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  96. Maryland Tax Relief Clinic Inc

    EIN 821195078 · Headquarters: OWINGS MILLS, MD, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Maryland Taxidermists Association

    EIN 273719289 · Headquarters: IJAMSVILLE, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Maryland Taxpayers Association Inc

    EIN 521747070 · Headquarters: Parkville, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  99. Maryland Technology Museum Inc

    EIN 830584905 · Headquarters: HUNT VALLEY, MD, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  100. Maryland Telehealth Alliance Inc

    EIN 821986544 · Headquarters: Rising Sun, MD, US · Education · Latest available filing year: 2020 · Primary form: IRS Form 990-N

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