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. Harmonic Ventures Inc

    EIN 392210904 · Headquarters: Oakland, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Harold and Nancy Zirkin Foundation

    EIN 521879047 · Headquarters: CHEVY CHASE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  3. Harold B & Dorothy a Snyder Foundation

    EIN 222316043 · Headquarters: WESTMINSTER, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  4. Harper's Choice Community Association Inc

    EIN 520993424 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Harriet Lane Home Foundation Inc

    EIN 526035784 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. Harriets Wildest Dreams Inc

    EIN 372049370 · Headquarters: Clinton, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  7. Harry & Beatrice Sley Foundation

    EIN 236391020 · Headquarters: Bethesda, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  8. Harry & Fay Burka Foundation Inc

    EIN 526041298 · Headquarters: CHEVY CHASE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  9. Harry L Gladding Foundation Inc C/o Neal D Borden

    EIN 521672857 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  10. Harry Z Isaacs Foundation

    EIN 521706022 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  11. Hartley Hall Senior Housing Inc

    EIN 521515510 · Headquarters: POCOMOKE CITY, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  12. Harundale Civic Association Inc

    EIN 526056340 · Headquarters: Glen Burnie, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  13. Harvard Club of Maryland Inc

    EIN 521491116 · Headquarters: Greenbelt Station, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Harvesting Hope Youth and Families Services

    EIN 813578053 · Headquarters: Cambridge, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Harwich Homeowners Association Inc

    EIN 521255916 · Headquarters: Frederick, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  16. Hasslinger Veterans Organization Inc

    EIN 521701227 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  17. Havard Virtuous Leadership Institute North America Inc

    EIN 274464908 · Headquarters: Columbia, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  18. Haven of Rest Sanctuary of Praise

    EIN 392076260 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  19. Haven of Rest Sanctuary of Praise Inc

    EIN 161638614 · Headquarters: Gaithersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  20. Haven of Rest Sanctuary of Praise Inc

    EIN 900517925 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  21. Haven Therapeutic Aftercare Program

    EIN 474169686 · Headquarters: OWINGS MILLS, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Havre De Grace Chamber of Commerce Inc

    EIN 520347465 · Headquarters: HAVRE DE GRACE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. Hawaii Society of Clinical Oncology

    EIN 994550014 · Headquarters: ROCKVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Hawks Pleasure Club of Essex Inc

    EIN 992290749 · Headquarters: ESSEX, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  25. Hawthorne Country Club of Charles County Md Inc

    EIN 520580900 · Headquarters: LA PLATA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Haywood Community College Student Chapter

    EIN 521950190 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  27. Hbv Institute

    EIN 814715977 · Headquarters: Potomac, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  28. Hcfa-cms Alumni Association

    EIN 830501762 · Headquarters: FOREST HILL, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. He's Alive Incorporated

    EIN 521295176 · Headquarters: GRANTSVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. Healing in Tandem

    EIN 413260963 · Headquarters: PARKVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Health & Welfare Fund Ibew Local 96

    EIN 042177839 · Headquarters: SPARKS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Health Care for the Homeless

    EIN 521576404 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Health Cuts Cost Inc

    EIN 393884639 · Headquarters: Deale, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Health Means Everything Coalition Inc

    EIN 393845145 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  35. Health Partners Inc

    EIN 521767044 · Headquarters: Waldorf, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  36. Health Reform Coalition

    EIN 271250425 · Headquarters: Bowie, MD, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  37. Health Resource Network Inc

    EIN 521272242 · Headquarters: Sparks, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  38. Healthcare Leaders Association of Virginia Inc

    EIN 541878008 · Headquarters: COCKEYSVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  39. Healthy Teen Network Inc

    EIN 521292530 · Headquarters: CHURCHVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  40. Healthy Ways Education Association

    EIN 800868146 · Headquarters: Parkville, MD, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  41. Hearing Loss Association of America Inc

    EIN 521528145 · Headquarters: Towson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Hearing Loss Association of America Inc

    EIN 822575604 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  43. Heart the Association of Retired Howard County Public School Person

    EIN 800602664 · Headquarters: Ellicott City, MD, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  44. Heart to Heart Ministries

    EIN 911876373 · Headquarters: Glenn Dale, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Heartland Soccer Group Inc

    EIN 992043514 · Headquarters: Upper Marlboro, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Heating and Air Conditioning Contractors of Md Scholarship Fund

    EIN 521458368 · Headquarters: SEVERNA PARK, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Heating Piping & Refrigeration Training Fund

    EIN 530238872 · Headquarters: LANDOVER, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Heating Piping and Refrigeration Medical Fund

    EIN 530207840 · Headquarters: CAPITAL HEIGHTS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Heaven on Earth Inc

    EIN 352660558 · Headquarters: Laurel, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  50. Heavenly Angels Safe and Warm Woman and Children Homeless Shelter

    EIN 831868767 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  51. Heavens Plate Prince Georges County

    EIN 812160830 · Headquarters: DISTRICT HEIGHTS, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Hebrew Burial Society of Washington D C Chesed Shel Emmes

    EIN 526055654 · Headquarters: Rockville, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. Hecht-levi Foundation Inc

    EIN 526035023 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  54. Hellenic Performing Arts Foundation Inc

    EIN 821716238 · Headquarters: Potomac, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Helm & Harbor Alliance Inc

    EIN 423853501 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Helminthological Society of Washington

    EIN 526050334 · Headquarters: Bowie, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  57. Help Association Inc

    EIN 521325726 · Headquarters: OWINGS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. Help for Chronically Undiagnosed Pa Tients

    EIN 394245458 · Headquarters: Bowie, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Help International Inc

    EIN 592607816 · Headquarters: Burtonsville, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Helping Hands Corporation

    EIN 454873147 · Headquarters: Frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  61. Helping Hands Food Pantry Inc

    EIN 521817541 · Headquarters: Upper Falls, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  62. Helping Hands in the Community Inc

    EIN 275210786 · Headquarters: Upper Marlboro, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Helping Up Mission Inc

    EIN 520635090 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Henpals Network Inc

    EIN 612291675 · Headquarters: Barnesville, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Henry Hart Veterans of Foreign Wars Post 1411

    EIN 520350122 · Headquarters: Cumberland, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Henry J Fox Fund C/o Rubino & Company

    EIN 526036472 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  67. Henry&anne Reich Family Foundation C/o Barton Rubenstein

    EIN 521308578 · Headquarters: CHEVY CHASE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  68. Hephzibah Mission Foundation Inc

    EIN 872511835 · Headquarters: Odenton, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  69. Herald Harbor Volunteer Fire Dept

    EIN 526054445 · Headquarters: Crownsville, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. Hereditary Order of the Signers of the Bush Declaration

    EIN 201205394 · Headquarters: Nottingham, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Heritage Harbour Womens Golf Association

    EIN 934055558 · Headquarters: ANNAPOLIS, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Heritage Housing Partners Corporation

    EIN 520880429 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Heritage Society of Essex and Middle River Inc

    EIN 237328476 · Headquarters: Essex, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Herman & Goldie Halpin Foundation Inc

    EIN 522052715 · Headquarters: CHEVY CHASE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  75. Hero Community Program Inc

    EIN 521725328 · Headquarters: TRAPPE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Herring Bay Yacht Club Inc

    EIN 521136824 · Headquarters: Tracys Landing, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Herrington Harbour Sailing Association Inc

    EIN 541791957 · Headquarters: North Beach, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Hester M Digges Charitable Remainder Unitrust DTD 6 1 73

    EIN 521917394 · Headquarters: Crofton, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  79. Hester M Digges UA DTD 11 2 1970

    EIN 526109395 · Headquarters: Crofton, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  80. Hickory Elementary School Pta

    EIN 521726073 · Headquarters: Bel Air, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Hickory Recreational Council Incorporated

    EIN 521219472 · Headquarters: Forest Hill, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. Hickory Ridge Community Association Inc

    EIN 521145609 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Hidden Springs Cat Rescue

    EIN 332445254 · Headquarters: Eldersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. High Peake Inc C/o Athelas Institute Inc

    EIN 521615700 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  85. High Point High School Class of 2004 Reunion

    EIN 463602441 · Headquarters: Hyattsville, MD, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  86. High Point University PAD Prelaw Chapter

    EIN 271707837 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. High Tide Club Inc

    EIN 931524336 · Headquarters: Crisfield, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Highbridge Citizens Association Inc

    EIN 521050991 · Headquarters: Bowie, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  89. Higher Dimension Glory Ministries Inc

    EIN 472838817 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Highway Holiness of the P a F W Church Incorporated

    EIN 521284376 · Headquarters: Aberdeen, MD, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  91. Hilda E & Julius W Schweinsberg Foundation

    EIN 526494445 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  92. Hill Crest Cemetery Inc

    EIN 520352906 · Headquarters: FEDERALSBURG, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Hillandale Citizens Association Inc

    EIN 452827730 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Hillandale Gardens Citizens Association

    EIN 521175353 · Headquarters: Adelphi, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Hillandale Swimming Pool Association Inc

    EIN 520688004 · Headquarters: Silver Spring, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  96. Hillcrest Baptist Church

    EIN 520782012 · Headquarters: TEMPLE HILLS, MD, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990

  97. Hills Angels Gymnastics Team Inc

    EIN 521266619 · Headquarters: Gaithersburg, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. Hillside Civic Association of Greater Capitol Heights Md

    EIN 522127286 · Headquarters: CAPITOL HGTS, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  99. Himmelrich Fund Inc

    EIN 526081812 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  100. Hire-national Inc

    EIN 521926091 · Headquarters: SILVER SPRING, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

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