- 1st Bank in Hominy, Hominy
- ACB Bank, Cherokee
- All America Bank, Mustang, Oklahoma City, Cache
- All Capital Bank, Locust Grove
- AllNations Bank, Calumet
- Alva State Bank & Trust Company, Alva
- American Bank & Trust Co., Tulsa
- American Bank of Oklahoma, Collinsville
- American Exchange Bank, Henryetta
- American Heritage Bank, Sapulpa
- American Nation Bank, Ardmore
- AmeriState Bank, Atoka, Antlers
- Anchor D Bank, Texhoma
- Armstrong Bank, Muskogee
- Arvest, locations throughout Oklahoma
- AVB Bank, Broken Arrow
- Bank 7, Oklahoma City, Watonga, Mustang
- The Bank, N.A., McAlester
- Bankers’ Bank, Oklahoma City
- BancCentral, N.A., Alva
- BancFirst, OKC and locations throughout Oklahoma
- Bank of America, locations throughout Oklahoma
- The Bank of Beaver City, Beaver
- Bank of Commerce, Chelsea, Tulsa, Adair, Catoosa, Sequoyah
- Bank of Commerce, Duncan
- Bank of Cushing (Blue Sky Bank), Cushing
- Bank of Eufaula, Eufaula
- Bank of Grand Lake, Grove
- Bank of Hydro, Hydro
- Bank of Oklahoma, N.A., Tulsa, and locations throughout Oklahoma
- Bank of the Panhandle, Guymon
- Bank of Vici, Vici
- The Bank of the West, Thomas
- Bank of Western Oklahoma, Elk City
- Bank 360, Cordell
- Blue Sky Bank, Pawhuska
- Blue Sky Bank, Wagoner
- Cattlemens Bank, Altus
- Carson Community Bank, Stilwell
- Central National Bank, Poteau
- Central Bank of Oklahoma, Tulsa, Sapulpa, Owasso, Edmond, Stillwater
- Chase Bank, Oklahoma City, Tulsa, throughout the state
- Chickasaw Community Bank, Oklahoma City
- Citizens Bank of Ada, Ada
- Citizens Bank and Trust Company of Ardmore, Ardmore
- Citizens Bank of Edmond, Edmond
- City National Bank & Trust Company, Lawton
- Cleo State Bank, Cleo
- Commerce Bank, locations throughout Oklahoma
- Community Bank, Alva
- Community Bank, Bristow
- Community Bank of Oklahoma, Verden
- The Community State Bank, Poteau
- Community State Bank, Hennessey
- Community State Bank of Canton, Canton
- Community National Bank of Okarche, Okarche
- Core Bank, Waynoka
- Cowboy Bank, Kremlin
- The Exchange Bank, Skiatook, Sperry, Owasso
- Fairview Savings & Loan Association, Fairview
- The Farmers Bank, Carnegie
- Farmers and Merchants Bank, Arnett
- Farmers & Merchants Bank, Duke
- Farmers and Merchants National Bank, Fairview
- Farmers and Merchants Bank, Maysville
- Farmers State Bank, Allen
- First American Bank, Stonewall
- FirstBank, Antlers, Atoka, Coalgate
- First Bank, Erick
- First Bank and Trust Company, Clinton
- First Bank and Trust Company, Duncan
- First Bank and Trust, Perry
- The First Bank of Okarche, Okarche
- First Bank of Owasso, Owasso
- First Bethany Bank & Trust, Bethany
- First Enterprise Bank, Oklahoma City
- First Fidelity Bank, Edmond, Midwest City, Moore, Oklahoma City, Norman & Warr Acres
- First Liberty Bank, Oklahoma City
- F & M Bank, Edmond
- First National Bank in Heavener, Heavener, Poteau
- First National Bank in Marlow, Marlow
- First National Bank & Trust Company, Weatherford
- First National Bank & Trust Co., Ardmore
- The First National Bank and Trust Company, Chickasha
- First National Bank and Trust Company, McAlester
- First National Bank & Trust Company of Broken Arrow, Broken Arrow
- The First National Bank of Coweta, Coweta
- First National Bank of Elk City, Elk City
- The First National Bank of Fletcher, Fletcher
- First National Bank of Hooker, Hooker
- The First National Bank of Lindsay, Lindsay
- First National Bank & Trust Company of Miami, Miami
- FNB Community Bank, Midwest City, Del City, Tinker Air Force Base, Choctaw, Harrah, Moore
- First National Bank in Okeene, Okeene
- The First National Bank of Pawnee, Pawnee
- First National Bank of Oklahoma, Ponca City, Tonkawa, Oklahoma City
- The First National Bank, Stigler
- The First Bank of Thomas, Thomas
- First National Bank of Weatherford (Blue Sky Bank), Weatherford
- First Oklahoma Bank, Jenks, Glencoe
- First Pryority Bank, Pryor, Tulsa
- First Security Bank, Beaver
- First Security Bank, Oklahoma City
- First State Bank of Anadarko, Anadarko
- The First State Bank, Boise City
- The First State Bank, Pond Creek, Enid
- The First State Bank, Oklahoma City, Canute, Midwest City
- First State Bank, Tahlequah
- First State Bank, Valliant
- First State Bank of Noble, Noble
- First State Bank of Watonga, Watonga
- First Summit Bank, Ryan
- First Texoma National Bank, Durant
- First United Bank & Trust Co., Durant
- Firstar Bank, N.A., Sallisaw, Muskogee, Roland, Tulsa
- Fort Sill National Bank, Fort Sill (Lawton)
- Frazer Bank, Altus
- Frontier State Bank, Oklahoma City
- Gateway First Bank, Cherokee
- Grand Bank, Tulsa, Grove
- Grand Savings Bank, Jay, Grove
- Grant County Bank, Medford
- Great Nations Bank, Norman
- Great Plains Bank, Elk City
- High Plains Bank, Keyes
- Hopeton State Bank, Hopeton
- IBC Bank, points throughout the state
- The Idabel National Bank, Idabel
- InterBank, Chandler, Elk City, Oklahoma City
- INTRUST Bank, points throughout the state
- Kirkpatrick Bank, Edmond
- Lakeside Bank of Salina, Salina
- Legacy Bank, Hinton
- Liberty National Bank, Lawton, Apache
- Local Bank, Hulbert
- Mabrey Bank, Bixby, Broken Arrow, Glenpool, Haskell, Jenks, Morris, Muskogee, Oklahoma City, Okmulgee, Tulsa, Weleetka, Wetumka
- McClain Bank, Purcell, Noble
- McCurtain County National Bank, Broken Bow
- Method Bank, Wyandotte
- MidFirst Bank, Oklahoma City, Altus, Anadarko
- National Bank of Sallisaw, Sallisaw
- NBC Oklahoma, Oklahoma City, Tulsa, Altus, Kingfisher, Enid
- Oklahoma Bank and Trust Company, Clinton, Arapaho
- Oklahoma Capital Bank, Tulsa
- Oklahoma Fidelity Bank, Pryor
- Oklahoma Heritage Bank, Roff
- Oklahoma State Bank, Buffalo
- Patrons Bank, Okmulgee, Henryetta, Wewoka
- Prism Bank, Guthrie
- Old Glory Bank, Elmore City
- Pauls Valley National Bank, Pauls Valley
- Payne County Bank, Perkins
- Peoples Bank & Trust Co., Ryan, Edmond
- Peoples National Bank, Checotah
- Peoples State Bank, Blair
- Quail Creek Bank, Oklahoma City
- RCB Bank, Bartlesville, Blackwell, Broken Arrow, Catoosa, Claremore, Collinsville, Coweta, Cushing, Drumright, Edmond, Inola, Nichols Hills, Norman, Oilton, Oklahoma City, Oologah Owasso, Ponca City, Pryor, Shidler, Skiatook, Stillwater, Stroud, Yukon
- Regent Bank, Nowata
- Security Bank, Tulsa
- Security Bank and Trust Company, Miami, Afton
- Security First National Bank of Hugo, Hugo
- Security National Bank of Enid, Enid
- Security State Bank, Cheyenne
- Security State Bank, Wewoka, Seminole
- Seiling State Bank, Seiling
- Shamrock Bank, N.A., Coalgate, Altus, Apache, Caddo, Clayton, Durant, Mountain View, Oklahoma City
- Simmons Bank, Stillwater, Tulsa, Oklahoma City, Chickasha
- SNB Bank, N.A., Shattuck
- Sooner State Bank, Tuttle
- Southwest National Bank, Weatherford
- Sovereign Bank, Shawnee
- SpiritBank, Tulsa, Bristow
- Spiro State Bank, Spiro
- The State Bank of Wynnewood, Wynnewood
- The State Exchange Bank, Lamont
- The Stock Exchange Bank, Woodward
- Stride Bank, Bartlesville, Enid, Blackwell, Mooreland, Tulsa & Woodward
- Triad Bank, Tulsa
- UMB Bank, Oklahoma City
- Vast Bank, Tulsa
- Valliance Bank, Oklahoma City
- Valor Bank, Edmond
- Vision Bank, N.A., Ada
- Walters Bank & Trust, Walters
- Washita State Bank, Burns Flat
- Washita Valley Bank, Fort Cobb
- Welch State Bank, Chouteau
- Welch State Bank, Welch
- YNB, Yukon