| Warren Professional Building Corporation | Tulsa | — | $30.1M | 6 |
| Counseling & Recovery Services of Oklahoma Inc | Tulsa | F30Z Mental Health & Crisis Intervention | $29.6M | 6 |
| LEGAL AID SERVICES OF OKLAHOMA INC | Oklahoma City | I80 Crime & Legal-Related | $29.4M | 2 |
| MCCURTAIN MEMORIAL MEDICAL MANAGEMENT INC | Idabel | E21Z Health Care | $29M | 10 |
| NORTHEASTERN OKLAHOMA COMMUNITY HEALTH CENTERS INC | Hulbert | E80 Health Care | $28.9M | 5 |
| OKLAHOMA SKYNET INC | Midwest City | B28 Education | $28.9M | 0 |
| The Oklahoma Proton Foundation | Oklahoma City | E24 Health Care | $28.9M | 11 |
| The William K Warren Foundation | Tulsa | T22 Philanthropy, Voluntarism & Grantmaking Foundations | $28.7M | 9 |
| HERITAGE HALL | Oklahoma City | B99Z Education | $28.7M | 7 |
| TULSA AREA UNITED WAY | Tulsa | — | $28.6M | 5 |
| Morton Comprehensive Health Services Inc | Tulsa | E320 Health Care | $28M | 7 |
| OKLAHOMA CITY OTHER POST EMPLOYMENT BENEFITS TR | Oklahoma City | Y43 Mutual & Membership Benefit | $28M | 0 |
| Saint Francis Hospital Vinita Inc | Tulsa | E22 Health Care | $27.4M | 11 |
| MERCY HOSPITAL LOGAN COUNTY INC | Guthrie | — | $27.3M | 20 |
| THE ANNE AND HENRY ZARROW FOUNDATION | Tulsa | T20 Philanthropy, Voluntarism & Grantmaking Foundations | $26.9M | 0 |
| SAINT FRANCIS HEALTH SYSTEM GENERAL PROFESSIONAL LIABILITY TRUST | Tulsa | E11 Health Care | $26.7M | 1 |
| SUNBEAM FAMILY SERVICES INC | Oklahoma City | P40Z Human Services | $26.6M | 6 |
| OKLAHOMA STATE FAIR INC | Oklahoma City | K20Z Food, Agriculture & Nutrition | $26M | 9 |
| Parkside Inc | Tulsa | F30Z Mental Health & Crisis Intervention | $25.8M | 15 |
| LIFT COMMUNITY ACTION AGENCY INC | Hugo | P200 Human Services | $25.7M | 2 |
| DALE ROGERS TRAINING CENTER INC | Oklahoma City | — | $25.6M | 4 |
| HOPE COMMUNITY SERVICES INC | Oklahoma City | F320 Mental Health & Crisis Intervention | $25.5M | 6 |
| TRINITY WOODS INC | Tulsa | P75Z Human Services | $25.5M | 8 |
| THE YOUNG MEN'S CHRISTIAN ASSOCIATION OF GREATER TULSA | Tulsa | P270 Human Services | $25.5M | 5 |
| LIFE PACE INC | Tulsa | E92 Health Care | $25.5M | 7 |
| Pawhuska Hospital Inc | Pawhuska | E20 Health Care | $25.4M | 6 |
| Mental Health Association in Tulsa Inc dba Mental Health Association Oklahoma | Tulsa | F80Z Mental Health & Crisis Intervention | $25.3M | 5 |
| INTEGRIS Health Woodward Hospital Inc | Oklahoma City | E22 Health Care | $25.2M | 3 |
| MERCY HEALTH OKLAHOMA COMMUNITIES | Oklahoma City | — | $24.7M | 16 |
| COMPATIBLE LANDS FOUNDATION | Claremore | C30 Environment | $24.6M | 1 |
| TULSA EDUCARE INC | Tulsa | O50 Youth Development | $24.4M | 3 |
| OSMA HEALTH - HEALTH PLAN | Oklahoma City | Y43 Mutual & Membership Benefit | $24.3M | 11 |
| ADAIR COUNTY HEALTH CENTER INC | Stilwell | E220 Health Care | $24.2M | 6 |
| NORTHFORK ELECTRIC COOPERATIVE INC | Sayre | — | $24M | 11 |
| GREEN COUNTRY BEHAVIORAL HEALTH SERVICES INC | Muskogee | F30Z Mental Health & Crisis Intervention | $23.8M | 8 |
| All Saints Home Medical LLC | Tulsa | E92 Health Care | $23.8M | 5 |
| NATIONAL COWBOY AND WESTERN HERITAGE MUSEUM | Oklahoma City | — | $23.7M | 6 |
| KATHLEEN S CRAFT FOUNDATION | Tulsa | P12 Human Services | $23.7M | 0 |
| TULSA ZOO MANAGEMENT INC | Tulsa | D115 Animal-Related | $22.8M | 6 |
| SOUTHWEST RURAL ELECTRIC ASSOC INC | Tipton | — | $22.7M | 13 |
| OKLAHOMA CITY GOLF AND COUNTRY CLUB | Nichols Hills | — | $22.5M | 6 |
| NATIONAL LIVESTOCK CREDIT CORPORATION | Oklahoma City | — | $22.4M | 5 |
| BIG FIVE COMMUNITY SERVICES INC | Durant | P200 Human Services | $22M | 3 |
| UNITED COMMUNITY ACTION PROGRAM INC | Pawnee | P20Z Human Services | $21.5M | 1 |
| CENTRAL STATE COMMUNITY SERVICES OKLAHOMA INC | Tulsa | P73Z Human Services | $21.3M | 3 |
| CARING HANDS HEALTHCARE CENTERSINC | McAlester | E32 Health Care | $21.2M | 13 |
| CN Enterprises Health Plan Trust | Ada | Y43 Mutual & Membership Benefit | $21.2M | 0 |
| TULSA JEWISH COMMUNITY RETIREMENT AND HEALTH CARE CENTER INC | Tulsa | — | $20.9M | 6 |
| TULSA REGIONAL CHAMBER (FKA METROPOLITAN TULSA CHAMBER OF COMMERCE) | Tulsa | — | $20.4M | 8 |
| BANCFIRST CORPORATION EMPLOYEES BENEFIT TRUST | Oklahoma City | — | $20.4M | 0 |
