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. International Order of the Rainbow Girls

    EIN 237506415 · Headquarters: Cumberland, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. International Order of the Rainbow Girls

    EIN 237506416 · Headquarters: Rosedale, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. International Order of the Rainbow Girls

    EIN 521853361 · Headquarters: Frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. International Order of the Rainbow Girls

    EIN 912079080 · Headquarters: Rockville, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. International Organization of Masters Mates and Pilots

    EIN 136020335 · Headquarters: LINTHICUM HEIGHTS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. International Penguin Classdinghy Assoc

    EIN 363049416 · Headquarters: Owings, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. International Pickleball Federation Inc

    EIN 882119409 · Headquarters: Chevy Chase, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. International Police Association United States Section

    EIN 521035935 · Headquarters: Rosedale, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. International Real Estate Association for Professionals Inc

    EIN 872795898 · Headquarters: Gaithersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. International Shellfish Restoration Society Isrs Inc

    EIN 392829151 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. International Society for Ethical Psychology and Psychiatry Inc

    EIN 237378417 · Headquarters: Welcome, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. International Society of African Bioscientists & Biotechnologists I

    EIN 030591979 · Headquarters: COLUMBIA, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. International Society of Certified Employee Benefit Specialists Inc

    EIN 363386715 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. International Union of Electrical Iue/cwa Afl-cio Local 130

    EIN 520434802 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. International Union of Elevator Constructors Local No 10

    EIN 530088577 · Headquarters: LANHAM, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. International Union of Operating Engineers Local 487 H & W Plan

    EIN 596231991 · Headquarters: SPARKS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. International Union of Operating Engineers Local 99-9A-99c

    EIN 530088600 · Headquarters: UPPER MARLBORO, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. International Union of Operating Engineers Local No 37

    EIN 520364296 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. International Union of Operating Engineers Local No 77

    EIN 530088596 · Headquarters: SUITLAND, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  20. International Union of Painters and Allied Trades

    EIN 350198600 · Headquarters: HANOVER, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. International Union of Painters and Allied Trades Local 368

    EIN 530039280 · Headquarters: LANHAM, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. International Union of Painters and Allied Trades Local 890

    EIN 546054514 · Headquarters: LANHAM, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. International Union of Science and Education

    EIN 464473587 · Headquarters: Clarksburg, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  24. International Union UAW LOCAL 1247

    EIN 520749562 · Headquarters: Maugansville, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  25. International Union UAW Local 1338

    EIN 520817256 · Headquarters: Havre de Grace, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  26. International Union UAW LOCAL 171

    EIN 520744095 · Headquarters: Hagerstown, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  27. International Union UAW Local 2301

    EIN 521706051 · Headquarters: Elkridge, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  28. International Union UAW Local 738

    EIN 520480538 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  29. International Union United Auto Aerospace & Agrgriculture Workers

    EIN 202666224 · Headquarters: Essex, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. International Union United Auto Aerospace & Agricultural Worker Am

    EIN 202666300 · Headquarters: Essex, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. International Union United Auto Aerospace & Agricultural Workers

    EIN 202666374 · Headquarters: Essex, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. International Union United Auto Aerospace & Agricultural Workers

    EIN 236419338 · Headquarters: Essex, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. International Union United Auto Aerospace & Agricultural Workers Local 17

    EIN 824362721 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  34. International Union United Auto Aerospace & Agricultural Workers Nc & Sc Uaw Cap Council

    EIN 621679341 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  35. International Union United Auto Aerospace&agricultural Worker Amer

    EIN 202631666 · Headquarters: Essex, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. International Wildlife Management Working Group

    EIN 521915706 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  37. International Wine & Food Society Washington DC

    EIN 800211917 · Headquarters: Bethesda, MD, USA · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ

  38. International Womens Insolvency & Restructuring Confederation Inc

    EIN 454782577 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. International Wood Collectors Society

    EIN 310621679 · Headquarters: ELKTON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  40. Intl Assn of Machinists & Aerospace Workers Local Lodge I-460

    EIN 461495208 · Headquarters: Aberdeen, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  41. Intl Assoc of Approved Basketball Officials Found

    EIN 061068478 · Headquarters: WESTMINSTER, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  42. Intl Assoc of Fire Fighters #964 Iaff

    EIN 526044979 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  43. Intl Association of Lions Bel Air Lions Club

    EIN 526066271 · Headquarters: Bel Air, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  44. Intl Network for the Prevention of Elder Abuse Inc

    EIN 043478887 · Headquarters: ROCKVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Invasive Species Working Group

    EIN 260394002 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  46. Inverness Forest Association Inc

    EIN 237162983 · Headquarters: Olney, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Inverness Recreation Club Inc

    EIN 520955920 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Inwood House Development Corporation

    EIN 520323695 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  49. Ioas Inc

    EIN 911770988 · Headquarters: HAGERSTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Iommp Supplemental Benefits Fund for New York City Employees

    EIN 132865775 · Headquarters: LINTHICUM HEIGHTS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Ionic Building Company Inc

    EIN 520364457 · Headquarters: REISTERSTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  52. Iota Alpha Lambda Chapter of Alpha Phi Alpha Fraternity Inc

    EIN 521128683 · Headquarters: Aberdeen, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Iota Chi Zeta Chapter of Zeta Phi Beta Sorority Inc

    EIN 992142355 · Headquarters: Cambridge, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  54. Iota It Takes a Man Political Action Committee

    EIN 921229123 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Iota Phi Lambda Sorority Inc

    EIN 237382815 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Iota Phi Lambda Sorority Inc

    EIN 872038872 · Headquarters: Upper Marlboro, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Iota Phi Theta Fraternity Inc

    EIN 223077558 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  58. Iota Sigma Pi

    EIN 136196564 · Headquarters: Brentwood, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  59. Iota Sigma Pi

    EIN 237224328 · Headquarters: Brentwood, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  60. Iota Sigma Pi

    EIN 310912831 · Headquarters: Brentwood, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  61. Iota Sigma Pi

    EIN 311198435 · Headquarters: Brentwood, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  62. Iota Sigma Pi

    EIN 371125508 · Headquarters: Brentwood, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  63. Iota Sigma Pi

    EIN 756035614 · Headquarters: Brentwood, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  64. Iota Sigma Pi

    EIN 900215690 · Headquarters: Brentwood, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  65. Iota Sigma Pi

    EIN 912025732 · Headquarters: Brentwood, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  66. Iota Tau Chapter of Phi Sigma Sigma at Miamiu

    EIN 814231932 · Headquarters: ELDERSBURG, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  67. Iota Upsilon Chapter at University of New Hampshire

    EIN 814244544 · Headquarters: ELDERSBURG, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. Iowa State University Student Chapter

    EIN 237328427 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  69. Ira J Basler Jr and Mary K Basler Foundation

    EIN 521734893 · Headquarters: Towson, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  70. Iran Cultural & Educational Center Inc

    EIN 521703152 · Headquarters: Rockville, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. Iranian American Medical Society of Greater Washington Inc

    EIN 521716549 · Headquarters: Rockville, MD, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  72. Iranian Jews of America Inc

    EIN 521158010 · Headquarters: ROCKVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Iron Workers Local #5 Joint Apprentice Training Committee

    EIN 526056134 · Headquarters: LARGO, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Iron Workers Local No 568 Health and Welfare Plan

    EIN 526112461 · Headquarters: CUMBERLAND, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Iron Workers Local Union 568 Joint Apprenticeship & Training Committee

    EIN 521925231 · Headquarters: CUMBERLAND, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  76. Irv & Bee Apatoff Foundation

    EIN 521788437 · Headquarters: BELTSVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  77. Irving Kohn Foundation Inc C/o Nancy Kohn Rabin

    EIN 526034189 · Headquarters: LUTHERVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  78. Irvington Woods Residence Inc

    EIN 852936125 · Headquarters: LANHAM, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Isaac Khan Foundation

    EIN 461118793 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  80. Isaiahs House of Hope Inc

    EIN 861205760 · Headquarters: Upper Marlboro, MD, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  81. Isan & Kusum Paul Foundation

    EIN 814713447 · Headquarters: GERMANTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  82. Islamic Society of Frederick Incorporated

    EIN 521793056 · Headquarters: Frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  83. Islamic-American Zakat Foundation

    EIN 521492341 · Headquarters: Bethesda, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Israel & Mollie Myers Foundation

    EIN 521314430 · Headquarters: TOWSON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  85. Issues of Life International Ministries Inc

    EIN 300949627 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Italian American Corporation of Ocean City

    EIN 521456383 · Headquarters: OCEAN CITY, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. Its About the Kids Education Organization Inc

    EIN 800312396 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Iuec Local 10 Land Holding Co Inc

    EIN 753006390 · Headquarters: LANHAM, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  89. Iuoe 99

    EIN 526072849 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Iuoe Local 37 Scholarship & Charitable Foundation

    EIN 463475890 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  91. Iupat

    EIN 221901518 · Headquarters: SPRINGFIELD, MD, United States · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  92. Iupat - Finishing Trades Institute

    EIN 521923143 · Headquarters: HANOVER, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Iupat District Council #51

    EIN 530207653 · Headquarters: LANHAM, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Iupat Local Union 911

    EIN 884259055 · Headquarters: HANOVER, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Ivb Corporation Co Ralph Werner

    EIN 521624545 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Ivy Hill Assoc Ttee for Ivy Hill Cemetery

    EIN 237420133 · Headquarters: LAUREL, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  97. Izaak Walton League of America Harford County Chapter

    EIN 526054087 · Headquarters: Bel Air, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Izaak Walton League of America Inc

    EIN 520783489 · Headquarters: FREDERICK, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Izaak Walton League of America Inc

    EIN 521328724 · Headquarters: Gaithersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Izaak Walton League of America Inc

    EIN 526047242 · Headquarters: Pylesville, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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