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. Maryland House and Garden Pilgrimage Inc

    EIN 520640624 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  2. Maryland Independent College & University Association Inc

    EIN 520914326 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Maryland Interclub Seniors Golf Association

    EIN 521318614 · Headquarters: Millesville, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  4. Maryland Jaycees Inc

    EIN 526054286 · Headquarters: ARNOLD, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  5. Maryland Jci Senate Inc

    EIN 472431852 · Headquarters: Denton, MD, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  6. Maryland Land Title Association Inc

    EIN 521436020 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  7. Maryland Lawyers for the Arts Inc

    EIN 521387063 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. Maryland League of Conservation Voters Inc

    EIN 522122715 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Maryland Legislative Asian American and Pacific Islander Caucus Inc

    EIN 815242515 · Headquarters: annapolis, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  10. Maryland Legislative Lobby for Life Inc

    EIN 521741293 · Headquarters: Rosedale, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  11. Maryland Library Association Inc

    EIN 521035154 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Maryland Licensed Firearms Dealers Association Inc

    EIN 521557340 · Headquarters: MILLERSVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Maryland Life & Health Insurance Guaranty Corporation

    EIN 521240061 · Headquarters: Aberdeen, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  14. Maryland Maritime Association Inc

    EIN 521746715 · Headquarters: Glen Burnie, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Maryland Masonic Research Society

    EIN 465322351 · Headquarters: Columbia, MD, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  16. Maryland Maternity Access Coalition

    EIN 464519170 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  17. Maryland Media Foundation Incorporated

    EIN 934350193 · Headquarters: Oxon Hill, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  18. Maryland Medical Directors Association Inc

    EIN 521936773 · Headquarters: COLUMBIA, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Maryland Medical Dispensary Assoc Corp

    EIN 822756259 · Headquarters: Hampstead, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  20. Maryland Million Ltd

    EIN 521405980 · Headquarters: REISTERSTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Maryland Motion Inc

    EIN 473270395 · Headquarters: Germantown, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  22. Maryland Motor Truck Association Inc

    EIN 520404290 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Maryland Multi-housing Association Inc

    EIN 521995753 · Headquarters: OWINGS MILLS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Maryland Municipal Clerks Association

    EIN 871904380 · Headquarters: Bowie, MD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  25. Maryland Music Educators Association

    EIN 526075299 · Headquarters: Beltsville, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Maryland Naral Inc

    EIN 521218706 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Maryland National Guard Foundation Inc

    EIN 521798637 · Headquarters: Middle River, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  28. Maryland Native Plant Society

    EIN 521760762 · Headquarters: Silver Spring, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  29. Maryland Network Against Domestic Violence Inc

    EIN 521233434 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  30. Maryland Nursery Landscape and Greenhouse Association

    EIN 530261561 · Headquarters: BROOKLANDVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  31. Maryland Nurses Association

    EIN 526070413 · Headquarters: Abingdon, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Maryland Nurses Association

    EIN 526071882 · Headquarters: Abingdon, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Maryland Nurses Association Inc

    EIN 520405035 · Headquarters: ABINGDON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Maryland Nurses Association Inc

    EIN 520554407 · Headquarters: Abingdon, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Maryland Nurses Association Inc

    EIN 521096088 · Headquarters: Abingdon, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Maryland Nurses Association Inc

    EIN 521096090 · Headquarters: Abingdon, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Maryland Nurses Association Inc

    EIN 526059724 · Headquarters: Abingdon, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Maryland Nurses Association Inc

    EIN 526078309 · Headquarters: Abingdon, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Maryland Occupational Therapy Association Inc Occupational Thera

    EIN 521097532 · Headquarters: Towson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Maryland Optometric Association

    EIN 520822684 · Headquarters: STEVENSON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Maryland Optometric Association Educational Foundation Inc

    EIN 521255996 · Headquarters: Stevenson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Maryland Optometric Association Inc

    EIN 237007931 · Headquarters: Stevenson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Maryland Optometric Association Inc

    EIN 237015590 · Headquarters: Stevenson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Maryland Optometric Association Inc

    EIN 237015668 · Headquarters: Stevenson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Maryland Optometric Association Inc

    EIN 521307970 · Headquarters: Stevenson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Maryland Optometric Association Inc

    EIN 521307976 · Headquarters: Stevenson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Maryland Orthopaedic Association

    EIN 521979179 · Headquarters: TOWSON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  48. Maryland Oystermen Association

    EIN 260844542 · Headquarters: EARLEVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Maryland Pastel Society Inc

    EIN 521138500 · Headquarters: Riderwood, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Maryland Peace Action Education Fund Inc

    EIN 521303680 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Maryland Pharmacists Association Foundation Incorporated

    EIN 237036163 · Headquarters: Columbia, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Maryland Pharmacists Association Inc

    EIN 520543828 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Maryland Philanthropy Network

    EIN 521326863 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. Maryland Place Homes Corporation

    EIN 237156038 · Headquarters: Montgomery Village, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Maryland Plumbing Heating Cooling Contractors of Md Inc

    EIN 520690180 · Headquarters: ELLICOTT CITY, MD, USA · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990

  56. Maryland Podiatric Medical Association C/o Richard Bloch the Adams Bldg

    EIN 521633485 · Headquarters: TOWSON, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  57. Maryland Praise Revival Mission Inc

    EIN 934400175 · Headquarters: HALETHORPE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Maryland Professional Employees Council

    EIN 911942805 · Headquarters: WINDSOR MILL, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Maryland Psychological Association

    EIN 520999569 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Maryland Public Interest Law Project Inc

    EIN 521620485 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  61. Maryland Public Interest Research Group Inc

    EIN 521103818 · Headquarters: College Park, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  62. Maryland Rangers Association Inc

    EIN 521610410 · Headquarters: ELLICOTT CITY, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  63. Maryland Ravens Inc

    EIN 521400324 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Maryland Ready-mix Concrete Association Inc

    EIN 521119344 · Headquarters: FREDERICK, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. Maryland Rehabilitation Association

    EIN 522057935 · Headquarters: Catonsville, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  66. Maryland Retailers Alliance Inc

    EIN 520575864 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Maryland Retired School Personnel Association Inc

    EIN 521745921 · Headquarters: ODENTON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. Maryland Retriever Club Inc

    EIN 521047459 · Headquarters: Cambridge, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Maryland Rifle Club Incorporated

    EIN 526054420 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Maryland Rising - Our Revolution

    EIN 820657190 · Headquarters: Mount Rainier, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Maryland Salem Children's Trust Inc

    EIN 521151566 · Headquarters: FROSTBURG, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Maryland Scholastic Press Advisers Association College of Journalism

    EIN 521528002 · Headquarters: Ocean City, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Maryland School for the Deaf Foundation Inc

    EIN 521566505 · Headquarters: FREDERICK, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Maryland School Nutrition Association Inc

    EIN 521374335 · Headquarters: Gaithersburg, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Maryland School Psychologists Association Inc

    EIN 237315823 · Headquarters: WHITE MARSH, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Maryland Shall Issue Inc

    EIN 204313402 · Headquarters: Parkville, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  77. Maryland Sheep Breeders Assoc Inc

    EIN 521126259 · Headquarters: FINKSBURG, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Maryland Sheriffs Association Inc

    EIN 237442984 · Headquarters: Cumberland, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Maryland Shorthorn and Polled Shorthorn Society Inc

    EIN 521061950 · Headquarters: WALKERSVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Maryland Skeet Shooting Association Inc

    EIN 521375445 · Headquarters: Glenn Dale, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Maryland Small Business Week Awards Program Inc

    EIN 521715189 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  82. Maryland Soccer Hall of Fame Inc

    EIN 320337135 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  83. Maryland Society for Disabled Children and Adults Foundation Inc

    EIN 520669694 · Headquarters: FREDERICK, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  84. Maryland Society of Accounting and Tax

    EIN 521243590 · Headquarters: Columbia, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. 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

  86. 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

  87. Maryland Society of Professional Engineers

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

  88. 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

  89. Maryland Soybean Board

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

  90. Maryland Space Business Roundtable Inc

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

  91. Maryland Sporting Dog Association Inc

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

  92. Maryland Sports Unlimited Inc

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

  93. Maryland State & DC AFL-CIO

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

  94. Maryland State Bar Association Inc

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

  95. Maryland State Baseball Association Inc

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

  96. Maryland State Beauty Culturist Assoc

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

  97. 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

  98. 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

  99. 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

  100. Maryland State Dental Association Inc

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

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