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. The Principio Furnace Cemetery Association Incorporated

    EIN 521175410 · Headquarters: Perryville, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. The Printmaking Legacy Project Inc

    EIN 800966577 · Headquarters: Rockville, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. The Rainbow Fund Inc

    EIN 521296116 · Headquarters: POTOMAC, MD, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-PF

  4. The Ralph and Shirley Klein Foundation Inc

    EIN 521763518 · Headquarters: FOREST HILL, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  5. The Renfrew Foundation

    EIN 133213943 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  6. The Republican Alliance of Harford County Inc

    EIN 521765698 · Headquarters: BEL AIR, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  7. The Retired Enlisted Association Auxiliary

    EIN 840961324 · Headquarters: ANNAPOLIS, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. The Rhea S Schwartz & Paul Martin Wolff Foundation

    EIN 521852485 · Headquarters: CHEVY CHASE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  9. The Richard Eaton Foundation

    EIN 526040787 · Headquarters: GAITHERSBURG, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  10. The Ridgelys Delight Association

    EIN 521065154 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. The Rmoa Business Association Inc Rba

    EIN 541802664 · Headquarters: District Height, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. The Robert H Smith School of Business Foundation Inc

    EIN 237332043 · Headquarters: POTOMAC, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  13. The Rock Creek Foundation for Mental Health Inc

    EIN 520966155 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. The Roderick Foundation

    EIN 521424803 · Headquarters: ROCKVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-PF

  15. The Roland Run Club Inc

    EIN 520673084 · Headquarters: RIDERWOOD, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. The Rotary Club of Mount Airy Inc

    EIN 853849575 · Headquarters: Mount Airy, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  17. The Rotary Club of Williamsport Foundation Inc

    EIN 521521244 · Headquarters: HAGERSTOWN, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. The Rothschild Charitable Foundation Inc

    EIN 521492357 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  19. The Rothschild Foundation Inc

    EIN 521301060 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  20. The Rouse Company Foundation C/o Gordon Glenn

    EIN 526056273 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  21. The Rouse Family Foundation Inc

    EIN 526074744 · Headquarters: UPPERCO, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  22. The Running Brook Children's Nursery Inc

    EIN 520894393 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. The Ruth M Knight Foundation Inc C/o Eric Naumburg Md

    EIN 136093663 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  24. The Ruxton-riderwood-lake Roland Area Imprrovement

    EIN 520660665 · Headquarters: RIDERWOOD, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  25. The Ryna and Melvin Cohen Family Foundation

    EIN 521800019 · Headquarters: BELTSVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  26. The Salem International Foundation Inc

    EIN 521072800 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  27. The Salisbury Jaycees Foundation Inc

    EIN 510169671 · Headquarters: SALISBURY, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. The Samuel & Margaret Gorn Foundation Attn David Goldner

    EIN 521598535 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  29. The Schwartz Institute Inc

    EIN 521126589 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  30. The Sciortino Foundation Inc

    EIN 650018049 · Headquarters: KENSINGTON, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  31. The Scottish Rite Holding Company

    EIN 520794723 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. The SEA Holding Co Inc TA Salaried Employees Association

    EIN 520558885 · Headquarters: Hanover, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. The Seed Sowers Inc

    EIN 934299713 · Headquarters: La Plata, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. The Sexual Assaultspouse Abuse Resource Center Inc

    EIN 521224705 · Headquarters: BEL AIR, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. The Shepherds Table Inc

    EIN 521381738 · Headquarters: Silver Spring, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. The Sikh Association of Baltimore

    EIN 521272711 · Headquarters: Randallstown, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. The Silver Family Foundation Inc

    EIN 521434998 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  38. The Sinclair Broadcast Diversity Scholarship Fund

    EIN 911500276 · Headquarters: COCKEYSVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  39. The Skaters' Education & Training Fund Inc

    EIN 521750624 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  40. The Society for Public Health Education Inc

    EIN 521514485 · Headquarters: Ellicott City, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  41. The Society for the Preservation of Federal Hill and Fell's Point Inc

    EIN 237188661 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. The Society of the Friendly Sons of Saint Patrick of Baltimore Inc

    EIN 526042047 · Headquarters: TIMONIUM, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  43. The Solomons Business Association Inc

    EIN 521993093 · Headquarters: SOLOMONS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  44. The Sonneborn Foundation Inc C/o Mark D Neumann

    EIN 911987558 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  45. The South Laurel Recreation Council Inc

    EIN 521422603 · Headquarters: Laurel, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. The Southern Maryland Chapter of the Retired Officers Association

    EIN 521299507 · Headquarters: Great Mills, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. The Spectrum Visibility Project

    EIN 413307223 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. The Steeplechase Fund

    EIN 136067724 · Headquarters: ELKTON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  49. The Suburban Club Inc

    EIN 520501700 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. The Talbot County Free Library Association Inc

    EIN 520629774 · Headquarters: EASTON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. The Talbot Optimist Club

    EIN 522095971 · Headquarters: EASTON, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. The Talbott and Ann Bond Family Foundation

    EIN 521661599 · Headquarters: TIMONIUM, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  53. The Taylor Foundation Inc

    EIN 526056357 · Headquarters: OWINGS MILLS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  54. The Temple of the Doctrine of Christ Inc

    EIN 521645649 · Headquarters: Brandywine, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  55. The Tenthouse Foundation Inc

    EIN 464699405 · Headquarters: Harwood, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  56. The Therapeutic & Recreational Riding Center, Inc.

    EIN 521368120 · Headquarters: Glenwood, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. The Thomas B and Elizabeth M Sheridan Foundation Inc

    EIN 526075270 · Headquarters: HUNT VALLEY, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  58. The Thomas F & Clementine L Mullan Foundation Inc

    EIN 526050776 · Headquarters: LUTHERVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  59. The Thomas W Bradley Foundation Inc

    EIN 521064463 · Headquarters: TOWSON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  60. The Tilghman Volunteer Fire Company Inc

    EIN 521069228 · Headquarters: TILGHMAN, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  61. The Tobias Ehrlich Eductl Endowmnt

    EIN 521448440 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  62. The Toby & Melvin Weinman Foundation Inc

    EIN 526051197 · Headquarters: STEVENSON, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  63. The Tolerance Foundation

    EIN 882752158 · Headquarters: Silver Spring, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  64. The Training Source Inc

    EIN 521843341 · Headquarters: Seat Pleasant, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. The Trustees of Mcdonough Charity S

    EIN 526048878 · Headquarters: LA PLATA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  66. The Trustees of the Ladew Topiary Gardens Inc

    EIN 132782826 · Headquarters: MONKTON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. The Tshimaz Foundation Inc

    EIN 923223875 · Headquarters: ROCKVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  68. The Twenty-twenty Corporation

    EIN 203880830 · Headquarters: Laurel, MD, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  69. The Union Cemetery Assoc of Montgomery County Maryland

    EIN 526043810 · Headquarters: SPENCERVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  70. The United States Foundation for Radio Science Inc

    EIN 393944971 · Headquarters: West Friendship, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. The United States Maritime Coalition Inc

    EIN 521852381 · Headquarters: Camp Springs, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. The United States Pony Club Inc Maryland Region

    EIN 611685351 · Headquarters: HOLLYWOOD, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  73. The Valerie J Maynard Foundation Inc

    EIN 872161635 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. The Valleys Planning Council Inc

    EIN 526081610 · Headquarters: TOWSON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. The Vegetarian Resource Group

    EIN 521279034 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. The Vet Space Incorporated

    EIN 832877838 · Headquarters: White Plains, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  77. The Village Incorporated

    EIN 814560190 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. The Virginia M Kincaid Foundation

    EIN 521770001 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  79. The Visclosky Foundation

    EIN 351725247 · Headquarters: Takoma Park, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  80. The W O'neil Foundation

    EIN 346516969 · Headquarters: CHEVY CHASE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  81. The Waldorf School of Baltimore Inc

    EIN 237305478 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. The Ward Foundation Inc

    EIN 237088071 · Headquarters: SALISBURY, MD, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990

  83. The Washington County Amvets Post 10 Inc

    EIN 521196587 · Headquarters: Hagerstown, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  84. The Weiss Foundation C/o Gelman Rosenberg & Freedman

    EIN 521848413 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  85. The Well Mind Association of Greater Washington Inc

    EIN 237378032 · Headquarters: ASHTON, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  86. The Westminster Lions Club Inc

    EIN 526066399 · Headquarters: WESTMINSTER, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. The Westminster Riding Club Inc

    EIN 520741718 · Headquarters: WESTMINSTER, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. The White Tail Timberlands Corporation Inc

    EIN 521517237 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. The Whitehall Pool and Tennis Club Inc

    EIN 136194223 · Headquarters: BOWIE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. The Whitehurst Club Resident Association Inc

    EIN 237041299 · Headquarters: Severna Park, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. The Wicomico Hunt Inc

    EIN 521039707 · Headquarters: CECILTON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  92. The Wiessner Foundation for Children Inc

    EIN 526002679 · Headquarters: BEL AIR, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  93. The William & Eva Fox Foundation

    EIN 133497192 · Headquarters: POTOMAC, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  94. The William & Vivienne Stark Family Foundation

    EIN 521818824 · Headquarters: CHEVY CHASE, MD, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-PF

  95. The William and Jean Schulte Foundation

    EIN 521377945 · Headquarters: WOODBINE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  96. The Wolf Family Charitable Trust

    EIN 136208693 · Headquarters: ROCKVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  97. The Women Empowerment Project Inc

    EIN 462093202 · Headquarters: Burtonsville, MD, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  98. The Women's Law Center of Maryland

    EIN 521238912 · Headquarters: Towson, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. The Writers Center

    EIN 521079969 · Headquarters: Bethesda, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. The Wyman Family Foundation Inc

    EIN 136124582 · Headquarters: EASTON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

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