| 1 | Delta Dental Plan of Oklahoma Oklahoma City | $307.6M | $296.1M | $116.7M |
| 2 | Ttcu Federal Credit Union Tulsa | $244.3M | $133.1M | $2.7B |
| 3 | Carpenters International Training Fund Tulsa | $221.8M | $54.0M | $166.9M |
| 4 | Mercy Hospital Ada INC Ada | $138.3M | $138.3M | $64.5M |
| 5 | National Rural Water Association Duncan | $106.4M | $81.8M | $89.1M |
| 6 | Tri-county Electric Cooperative INC Hooker | $103.8M | $103.8M | $359.2M |
| 7 | Verdigris Valley Electric Cooperative Incorporated Collinsville | $93.6M | $93.6M | $238.5M |
| 8 | Anne and Henry Zarrow Foundation Tulsa | $93.0M | $0 | $281.0M |
| 9 | Canadian Valley Electric Cooperative INC Seminole | $91.0M | $81.9M | $241.3M |
| 10 | Central Rural Electric Cooperative Stillwater | $88.5M | $88.5M | $322.7M |
| 11 | Hardesty Family Foundation INC Tulsa | $85.3M | $0 | $142.2M |
| 12 | Cotton Electric Cooperative INC Walters | $83.7M | $83.2M | $187.2M |
| 13 | Cimarron Electric Cooperative INC Kingfisher | $76.2M | $76.0M | $189.3M |
| 14 | Lake Region Electric Cooperative INC Hulbert | $75.6M | $74.4M | $274.9M |
| 15 | Museum of the Bible INC Oklahoma City | $74.3M | $62.8M | $442.8M |
| 16 | Citgo Employees Benefit Trust Tulsa | $73.8M | $73.8M | $33.0M |
| 17 | United Association of Journeymen & Apprentices of the Plumbing & Pipe Tulsa | $73.7M | $15.5M | $170.5M |
| 18 | Indian Electric Cooperative INC Cleveland | $70.4M | $70.2M | $201.0M |
| 19 | Oklahomas Credit Union Oklahoma City | $62.3M | $43.5M | $795.9M |
| 20 | Pipeline Industry Benefit Fund Tulsa | $62.2M | $58.7M | $99.5M |
| 21 | Choctaw Electric Cooperative INC Hugo | $60.8M | $59.3M | $151.2M |
| 22 | Rural Electric Co Op INC Lindsay | $59.3M | $59.3M | $104.8M |
| 23 | William Barry Love Foundation INC Muskogee | $55.3M | $0 | $54.5M |
| 24 | Kiamichi Electric Cooperative INC Wilburton | $52.1M | $52.0M | $135.8M |
| 25 | American Fidelity Foundation Oklahoma City | $50.4M | $0 | $48.1M |
| 26 | Mid-america Christian University Oklahoma City | $48.9M | $38.6M | $45.4M |
| 27 | Red River Valley Rural Electric Association Marietta | $48.7M | $48.7M | $97.8M |
| 28 | Tulsa Psychiatric Center INC Tulsa | $47.1M | $13.9M | $172.6M |
| 29 | The Helmerich Trust Tulsa | $44.8M | $0 | $95.1M |
| 30 | Southeastern Electric Cooperative INC Durant | $43.9M | $43.9M | $95.3M |
| 31 | Kay Electric Cooperative Incorporate Blackwell | $42.0M | $41.9M | $108.0M |
| 32 | Northwestern Electric Cooperative INC Woodward | $42.0M | $41.0M | $130.5M |
| 33 | Cookson Hills Electric Cooperative INC Stigler | $41.8M | $41.8M | $153.5M |
| 34 | National Cowboy and Western Heritage Museum INC Oklahoma City | $38.4M | $24.1M | $136.2M |
| 35 | Oklahoma Central Credit Union Tulsa | $38.2M | $38.2M | $686.9M |
| 36 | Tulsa Area United Way Tulsa | $38.1M | $28.6M | $39.9M |
| 37 | Independent Opportunities INC of Oklahoma Tulsa | $36.5M | $36.4M | $24.5M |
| 38 | Records-johnston Family Foundation INC Oklahoma City | $34.2M | $0 | $99.4M |
| 39 | Sarkeys Foundation Norman | $34.1M | $0 | $126.4M |
| 40 | Oklahoma City Golf & Country Club Nichols Hills | $32.5M | $30.0M | $41.4M |
| 41 | Southern Hills Country Club Tulsa | $30.9M | $23.0M | $66.7M |
| 42 | Warren Professional Building Corp. Tulsa | $30.1M | $30.1M | $146.2M |
| 43 | Oklahoma Educators Credit Union Oklahoma City | $27.9M | $17.3M | $211.3M |
| 44 | Mercy Hospital Logan County INC Guthrie | $27.3M | $27.3M | $5.9M |
| 45 | Dale Rogers Training Center INC Oklahoma City | $26.9M | $25.6M | $25.7M |
| 46 | Mercy Health Oklahoma Communities INC Oklahoma City | $26.0M | $24.7M | $83.5M |
| 47 | John Zink Foundation Tulsa | $25.4M | $0 | $50.2M |
| 48 | Northfork Electric Cooperative INC Sayre | $24.5M | $24.5M | $84.3M |
| 49 | McMahon Foundation Lawton | $23.6M | $0 | $49.4M |
| 50 | Southwest Rural Electric Association INC Tipton | $23.1M | $22.7M | $80.3M |