Unknown & Unclassified nonprofits
Unknown & Unclassified nonprofits. Browse 557,756 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
- Oklahoma Methodist Foundation
EIN 730758119 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Military Historical Association
EIN 261927578 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oklahoma Mineral and Gem Society Inc
EIN 736105715 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Moose Association
EIN 731393371 · Headquarters: WOODWARD, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Mortgage Bankers Association
EIN 731239794 · Headquarters: STILLWATER, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oklahoma Mu Alumni Corporation
EIN 736102125 · Headquarters: STILLWATER, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oklahoma Mu of Sae Inc
EIN 730647826 · Headquarters: EDMOND, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Municipal Contractors Asso
EIN 730670279 · Headquarters: EDMOND, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oklahoma Native Plant Society
EIN 731318037 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oklahoma Nursery & Landscape Assoc
EIN 730734570 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oklahoma Nurses Association
EIN 730490791 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Nurses Association
EIN 730563323 · Headquarters: OKLAHOMA, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Nurses Association
EIN 730611482 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oklahoma Nurses Association
EIN 736099405 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Nurses Association
EIN 736118980 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Nurses Foundation Inc
EIN 731165207 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Oilmens Fish Fry Assoc Inc
EIN 813905558 · Headquarters: Mustang, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma One-call System Inc
EIN 731093611 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oklahoma Operating Engineers Welfare Plan
EIN 730790052 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Opportunity Project Inc
EIN 823650242 · Headquarters: Edmond, OK, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Oklahoma Optometric Association
EIN 730641734 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Oracle Users Group
EIN 472658875 · Headquarters: Norman, OK, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Oklahoma Ornithological Society
EIN 237057442 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Osteopathic Association
EIN 730757525 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990
- Oklahoma Ozark Chapter of the Appraisal Institute
EIN 730610593 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Partners of the Alliance
EIN 736112676 · Headquarters: Norman, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Pawnbrokers Association Inc
EIN 731205614 · Headquarters: Moore, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oklahoma Payroll Org Llc
EIN 731414077 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Pedorthic Association
EIN 550808342 · Headquarters: Denton, TX, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Oklahoma Petroleum Marketers & Convenience Stores Association Inc
EIN 730709109 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Pharmacists Association
EIN 730582468 · Headquarters: Ardmore, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oklahoma Pharmacists Helping Pharmacists
EIN 731391653 · Headquarters: NORMAN, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Oklahoma Physical Therapy Association
EIN 237056789 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Oklahoma Pilots Association
EIN 731357652 · Headquarters: Bethany, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oklahoma Pinto Horse Association
EIN 731382669 · Headquarters: CLAREMORE, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Oklahoma Podiatric Medical Association
EIN 731080341 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Police Chiefs Training Foundation Inc
EIN 731289104 · Headquarters: TULSA, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Predictive Maintenance
EIN 731413933 · Headquarters: STILLWATER, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oklahoma Press Association
EIN 730383650 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Propane Gas Association
EIN 730606470 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oklahoma Property and Casualty Insurance Guaranty Association
EIN 731121874 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Prosperity Project
EIN 993056256 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Oklahoma Psychiatric Physicians Assoc
EIN 736111803 · Headquarters: Norman, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oklahoma Psychological Association
EIN 730983274 · Headquarters: NORMAN, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oklahoma Ptg Chapter 731
EIN 460992639 · Headquarters: EDMOND, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Public Employees Association
EIN 730992657 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Public Fund Trustee Education Conference Association
EIN 921723062 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oklahoma Quarter Horse Association
EIN 730777189 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oklahoma Quarter Horse Racing Association Inc
EIN 731348198 · Headquarters: EDMOND, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Railroad Association Inc
EIN 731393761 · Headquarters: NORMAN, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oklahoma Railway Museum Limited
EIN 731234341 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Ready Mixed Concrete Association
EIN 730658701 · Headquarters: PIEDMONT, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oklahoma Recreation & Park Society Inc
EIN 731172557 · Headquarters: Edmond, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Oklahoma Recyclers Association
EIN 731371284 · Headquarters: MUSKOGEE, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oklahoma Redbirds Baseball - Club
EIN 472855734 · Headquarters: Yukon, OK, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Oklahoma Redbirds Club
EIN 471670932 · Headquarters: Skiatook, OK, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Oklahoma Region Sports Car Club of America Inc
EIN 736102697 · Headquarters: Moore, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Region Volleyball Association Inc
EIN 731346899 · Headquarters: EDMOND, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Regional Health Partners Inc
EIN 813077538 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Oklahoma Regional Training Center Inc Fka Sooner Wrestling Club Inc
EIN 731074106 · Headquarters: EDMOND, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Registry of Interpreters for the Deaf
EIN 731582123 · Headquarters: Yukon, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Oklahoma Reining Horse Association
EIN 320030461 · Headquarters: KIEFER, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Rental Dealers Association
EIN 731295974 · Headquarters: Bixby, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Residence Corporation
EIN 730738239 · Headquarters: Muskogee, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Residential Assisted Livin
EIN 731199479 · Headquarters: CLAREMORE, OK, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990
- Oklahoma Restaurant Association
EIN 730383792 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Retired Educators Association
EIN 731331032 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Rhf Housing Inc
EIN 330236323 · Headquarters: LONG BEACH, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Rose Chapter Nsdar
EIN 843908838 · Headquarters: Tulsa, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Rural Rehabilitation Corp
EIN 730769502 · Headquarters: STILLWATER, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Rural Water Association
EIN 237329973 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Safety Center
EIN 731443094 · Headquarters: TULSA, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Safety Management Council
EIN 731416128 · Headquarters: JENKS, OK, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ
- Oklahoma Saler Association
EIN 731291976 · Headquarters: Ninnekah, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Saved by Grace Outreach Mi
EIN 843089238 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oklahoma School of Science and Mathematics
EIN 731393705 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Oklahoma Secondary School Activities Association
EIN 730599761 · Headquarters: Oklahoma City, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Seed Trade Association Inc
EIN 731154176 · Headquarters: ENID, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Oklahoma Senior Golf Association
EIN 731068904 · Headquarters: Norman, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Oklahoma Sheriffs Association Inc
EIN 731401947 · Headquarters: EDMOND, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oklahoma Sign Association
EIN 730797894 · Headquarters: YUKON, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oklahoma Soccer Referee Association Inc
EIN 474458957 · Headquarters: TULSA, OK, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Oklahoma Society of Anesthesiologists
EIN 730739936 · Headquarters: EDMOND, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oklahoma Society of Association Executives Education and Research
EIN 731414283 · Headquarters: Mustang, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Society of Association Executives Inc
EIN 731304820 · Headquarters: Mustang, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oklahoma Society of Certified Public Accountants
EIN 730689320 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Society of Certified Public Accountants Educational Foun
EIN 731339781 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Society of Clinical Oncology I
EIN 731392619 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Society of Cpas (Group Return)
EIN 731376933 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Society of Health-system Pharmacists
EIN 731043506 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oklahoma Society of Land Surveyors
EIN 237260775 · Headquarters: EDMOND, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Oklahoma Society of Public Accountants
EIN 736097122 · Headquarters: BROKEN ARROW, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Oklahoma Sooner Circuit of Dog Shows Club
EIN 731568711 · Headquarters: Edmond, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Sooner Private Process Server Association Inc
EIN 473370269 · Headquarters: TULSA, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oklahoma Soybean Board Inc
EIN 731521287 · Headquarters: CLAREMORE, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Speaker's Ball Inc
EIN 202018083 · Headquarters: NORMAN, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oklahoma Speech Theatre Communication Association Inc
EIN 731211088 · Headquarters: Bethany, OK, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Oklahoma Sportsmens Fund Inc
EIN 871227117 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oklahoma State Afl-cio
EIN 730674439 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oklahoma State Bureau of Investigation Employee Association
EIN 731303818 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N