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. Ogwa Federated Union Inc

    EIN 522121149 · Headquarters: Upper Marlboro, MD, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Ogwuche Amaedi Foundation Inc

    EIN 993132458 · Headquarters: SEVERN, MD, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Ogwuche Perry Foundation Inc

    EIN 993132017 · Headquarters: SEVERN, MD, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Ohana Homes Inc

    EIN 300361765 · Headquarters: BALTIMORE, MD, USA · Housing & Shelter · Latest available filing year: 2022 · Primary form: IRS Form 990

  5. Ohana of Howard County Inc

    EIN 845123740 · Headquarters: COLUMBIA, MD, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. OHara Development Partners CDC INC

    EIN 844685721 · Headquarters: Baltimore, MD, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Ohel Hannah

    EIN 413453041 · Headquarters: baltimore, MD, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Ohevet Ozevet Productions Inc

    EIN 883903624 · Headquarters: Potomac, MD, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Ohio College Health Association

    EIN 237289785 · Headquarters: SILVER SPRING, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Ohio Northern University PAD Prelaw Chapter

    EIN 260063558 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Ohio State University Alumni Associ Ation Inc

    EIN 311484810 · Headquarters: WALDORF, MD, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  12. Ohio State University PAD Prelaw Chapter

    EIN 943103869 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Ohio State University Student Chapter

    EIN 237035713 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  14. Ohio University PAD Prelaw Chapter

    EIN 943103911 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Ohioh Cares

    EIN 932599134 · Headquarters: UPPER MARLBORO PG, MD, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Ohr Ahuva Inc

    EIN 994486030 · Headquarters: Baltimore, MD, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Ohr Chadash Congregation Inc Dba Ohr Chadash Academy

    EIN 452187170 · Headquarters: Baltimore, MD, USA · Religion Related · Latest available filing year: 2023 · Primary form: IRS Form 990

  18. Ohr Hatorah

    EIN 461611567 · Headquarters: Silver Spring, MD, US · Religion Related · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  19. Oic of Anne Arundel County Inc

    EIN 521116510 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Oil Heat Association of Delmarva Inc

    EIN 522171845 · Headquarters: Salisbury, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  21. Ojczyzna Polish Dancers

    EIN 453689812 · Headquarters: Baltimore, MD, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Ojo Balogun Foundation

    EIN 861601102 · Headquarters: BERWYN HTS, MD, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  23. Ok2xcel Academics & Athletics Inc

    EIN 275550291 · Headquarters: Bowie, MD, US · Recreation & Sports · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  24. Okay to Play Limited Inc

    EIN 274398677 · Headquarters: LAUREL, MD, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  25. Okeer Gaa Community Support Inc

    EIN 453250389 · Headquarters: Adamstown, MD, USA · International, Foreign Affairs & National Security · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ

  26. Okeho Development Association- USA Branch

    EIN 872181358 · Headquarters: Bowie, MD, US · Arts, Culture & Humanities · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  27. Oklahoma State University PAD Chapter

    EIN 943103979 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Oklahoma State University Student Chapter

    EIN 237379490 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  29. Okomo Otado and Leonora Odinya Foundation Inc

    EIN 852722577 · Headquarters: Bethesda, MD, USA · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  30. Okoyong Alumni Association

    EIN 473149330 · Headquarters: HYATTSVILLE, MD, US · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Okpedafe Assoication of America Inc

    EIN 934954893 · Headquarters: Upper Marlboro, MD, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Okpella Development Association-USA

    EIN 821310214 · Headquarters: ELLICOTT, MD, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Okuku North America

    EIN 872113039 · Headquarters: CROFTON, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. Okyeman Council of North America

    EIN 800653553 · Headquarters: BOWIE, MD, US · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  35. Okyeman Union of Greater Washington Area Inc

    EIN 800686949 · Headquarters: Hyattsville, MD, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Ol Pathy Family Foundation Inc

    EIN 452617992 · Headquarters: ROCKVILLE, MD, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  37. Olabiyi Joseph Babalola Foundation

    EIN 884245865 · Headquarters: Silver Spring, MD, US · Arts, Culture & Humanities · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  38. Old Achimotan Association - 1995 Ye Ar Group

    EIN 471045106 · Headquarters: WALDORF, MD, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Old Ball Game

    EIN 852578194 · Headquarters: Ellicott City, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Old Blair Auditorium Project Inc

    EIN 810662041 · Headquarters: Silver Spring, MD, US · Arts, Culture & Humanities · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  41. Old Bo Boys Association USA Inc

    EIN 331202139 · Headquarters: bowie, MD, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Old Bohemia Historical Society Inc

    EIN 237111584 · Headquarters: Warwick, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  43. Old Catonsville Neighborhood Association Inc

    EIN 521807208 · Headquarters: Catonsville, MD, US · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Old Conventonians Global Association

    EIN 933322854 · Headquarters: UPPER MARLBORO, MD, US · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  45. Old Court Greenspring Improvement Asssn Inc

    EIN 521146967 · Headquarters: Pikesville, MD, US · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Old Dundalk Neighborhood

    EIN 262346153 · Headquarters: Dundalk, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Old Farm Swim & Paddle Tennis Club Inc

    EIN 520802035 · Headquarters: ROCKVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  48. Old Fat Bald Guys Inc

    EIN 921537784 · Headquarters: Frederick, MD, US · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. Old Forge Flyers Inc

    EIN 521260955 · Headquarters: Smithsburg, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Old Glory Chapter Inc

    EIN 260358135 · Headquarters: Laurel, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Old Goucher Community Association

    EIN 472964238 · Headquarters: Baltimore, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  52. Old Harford Town Maritime Center Inc

    EIN 521804470 · Headquarters: PASADENA, MD, US · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  53. Old Hickory Rod & Gun Club Inc

    EIN 453785449 · Headquarters: frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  54. Old Line Football Club Inc

    EIN 472894826 · Headquarters: Bel Air, MD, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990

  55. Old Line League Limited

    EIN 335000089 · Headquarters: JEFFERSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Old Line Legal Aid Foundation Inc

    EIN 454686463 · Headquarters: Baltimore, MD, US · Crime & Legal Related · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  57. Old Line Performing Arts Inc

    EIN 850688114 · Headquarters: Frederick, MD, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. Old Line Sailing and Cruising Club Inc

    EIN 471561777 · Headquarters: Annapolis, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Old Line Soccer Academy Inc

    EIN 815347445 · Headquarters: Kingsville, MD, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  60. Old Line Society

    EIN 452764508 · Headquarters: Lutherville Timonium, MD, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Old Line State Lacrosse Club Inc

    EIN 263089811 · Headquarters: ARNOLD, MD, USA · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990

  62. Old Line Tailgating Club Inc

    EIN 824023849 · Headquarters: Thurmont, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Old Line Velo Inc

    EIN 462070907 · Headquarters: Baltimore, MD, US · Recreation & Sports · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  64. Old Liners Baseball Club

    EIN 394412691 · Headquarters: Lothian, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Old Makeni Franciscans Association

    EIN 510553258 · Headquarters: Germantown, MD, US · Education · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  66. Old Mcdarlings Farm Rescue & Sanctuary

    EIN 832716897 · Headquarters: Lusby, MD, US · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Old Mill Midddle School North Pta Inc

    EIN 521910621 · Headquarters: Millersville, MD, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Old Mill Youth Association Inc

    EIN 870791820 · Headquarters: SEVERN, MD, US · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  69. Old Orlu Progressive Union Inc

    EIN 522079813 · Headquarters: Laurel, MD, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  70. Old Prince Waleans Association

    EIN 450481338 · Headquarters: PARKVILLE, MD, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Old South Country Club Inc C/o Mcnamee Hosea Attnkevin Elden

    EIN 521592096 · Headquarters: ANNAPOLIS, MD, USA · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990

  72. Old Takoma Business Association Inc

    EIN 753131452 · Headquarters: TAKOMA PARK, MD, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Old Timers Soccer Association of Maryland Inc

    EIN 522019624 · Headquarters: ELLICOTT CITY, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  74. Old Town Mall Merchants Association

    EIN 843596654 · Headquarters: Baltimore, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Old Vic Baseball Inc

    EIN 393042339 · Headquarters: Laurel, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Old Whitemarsh Cemetery Trappe Maryland Inc

    EIN 237202490 · Headquarters: EASTON, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Old-growth Forest Network Inc

    EIN 454115570 · Headquarters: EASTON, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Olde Mill Band Boosters Association Inc

    EIN 521444286 · Headquarters: Millersville, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  79. Olde Mill Foundation

    EIN 200809557 · Headquarters: Upper Marlboro, MD, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Olde Severna Park Improvement Assoc

    EIN 520664220 · Headquarters: SEVERNA PARK, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  81. Older Women Embracing Life Inc

    EIN 270456843 · Headquarters: Baltimore, MD, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. Oldetowne Homes Inc

    EIN 522016556 · Headquarters: FREDERICK, MD, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Oldfields School Inc

    EIN 520591645 · Headquarters: SPARKS GLENCOE, MD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Oldies but Goodies Cocker Rescue Inc

    EIN 541833707 · Headquarters: BETHESDA, MD, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990

  85. Oldtown Community Center Inc

    EIN 522218178 · Headquarters: Oldtown, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Oldtown Gators Community Development Corporation

    EIN 815389999 · Headquarters: Brooklyn, MD, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Oldtown Volunteer Fire Dept Inc

    EIN 521256890 · Headquarters: OLDTOWN, MD, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. Oleg Organization for Liberal Education in Georgia Inc

    EIN 264378722 · Headquarters: Annapolis, MD, US · International, Foreign Affairs & National Security · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  89. Olf Senior Housing Ii

    EIN 264290198 · Headquarters: Timonium, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Olf Senior Housing Inc

    EIN 262348038 · Headquarters: Timomium, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Olive Branch Lodge 93

    EIN 825113400 · Headquarters: Preston, MD, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Olive Branch Preparatory School Inc

    EIN 881676105 · Headquarters: Germantown, MD, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Olive Tree Discipleship Center Corporation

    EIN 463314680 · Headquarters: Waldorf, MD, US · Crime & Legal Related · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  94. Olive Tree Inc

    EIN 452871181 · Headquarters: hagerstown, MD, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Oliver Beach Improvement Association Inc

    EIN 526054315 · Headquarters: Chase, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Oliver Community Association

    EIN 521099392 · Headquarters: BALTIMORE, MD, USA · Community Improvement & Capacity Building · Latest available filing year: 2009 · Primary form: IRS Form 990

  97. Oliver E Pope Sr Scholarship Fund

    EIN 454952465 · Headquarters: NOTTINGHAM, MD, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  98. Oliver Economic Development Corporation

    EIN 521389216 · Headquarters: BALTIMORE, MD, USA · Community Improvement & Capacity Building · Latest available filing year: 2009 · Primary form: IRS Form 990-EZ

  99. Oliver Heritage Research Group

    EIN 830409954 · Headquarters: Severna Park, MD, US · Arts, Culture & Humanities · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  100. Olivia Constants Foundation Inc

    EIN 453025889 · Headquarters: Annapolis, MD, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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