| $150,000–350,000 | BKTK LLC | OKLAHOMA CITY, OK | MidFirst Bank |
| $350,000–1 million | BLACK DIAMOND NATIONWIDE LLC | OKLAHOMA CITY, OK | Security State Bank of Oklahoma |
| $150,000–350,000 | BLACK MESA TRUCKING LLC | OKLAHOMA CITY, OK | Central Bank of Oklahoma |
| $350,000–1 million | BLAIR REMY CORPORATION P.C | OKLAHOMA CITY, OK | Valliance Bank |
| $150,000–350,000 | BLAKE PRODUCTION COMPANY, INC. | OKLAHOMA CITY, OK | MidFirst Bank |
| $150,000–350,000 | BLANEY, TWEEDY TIPTON & HIERSCHE, PLLC | OKLAHOMA CITY, OK | Valor Bank |
| $350,000–1 million | BLASTPRO MANUFACTURING, INC. | OKLAHOMA CITY, OK | Prime Bank |
| $1–2 million | BLASTRAC N.A., INC. | OKLAHOMA CITY, OK | Parkside Financial Bank & Trust |
| $350,000–1 million | BLISS ELECTRIC, INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | BLUEWATER ENERGY SERVICES LLC | OKLAHOMA CITY, OK | Oklahoma State Bank |
| $150,000–350,000 | BLUMENTHAL HEAVY DUTY, INC | OKLAHOMA CITY, OK | First Enterprise Bank |
| $150,000–350,000 | BLUMENTHAL MANUFACTURING CO, INC. | OKLAHOMA CITY, OK | First Enterprise Bank |
| $350,000–1 million | BMAG LUXURY 1, LLC | OKLAHOMA CITY, OK | Blue Sky Bank |
| $350,000–1 million | BMAG LUXURY 2, LLC | OKLAHOMA CITY, OK | Blue Sky Bank |
| $1–2 million | BMAG MANAGEMENT COMPANY, LLC | OKLAHOMA CITY, OK | Blue Sky Bank |
| $150,000–350,000 | BOARD OF TRUSTEES OF CAMPS AND CONFERENCES OF THE OKLAHOMA ANNUAL CONFERENCE OF | OKLAHOMA CITY, OK | Prosperity Bank |
| $1–2 million | BOARDMAN LLC | OKLAHOMA CITY, OK | Arvest Bank |
| $350,000–1 million | BOB BROOKS MOTOR COMPANY | OKLAHOMA CITY, OK | MidFirst Bank |
| $2–5 million | BOB MILLS FURNITURE CO, INC | OKLAHOMA CITY, OK | International Bank of Commerce |
| $350,000–1 million | BOB MOORE CADILLAC, LLC | OKLAHOMA CITY, OK | Blue Sky Bank |
| $350,000–1 million | BOB MOORE COLLISION CENTERS, LLC | OKLAHOMA CITY, OK | Blue Sky Bank |
| $350,000–1 million | BOB MOORE DODGE CHRYSLER JEEP, LLC | OKLAHOMA CITY, OK | Blue Sky Bank |
| $350,000–1 million | BOB MOORE ENTERPRISES, LLC | OKLAHOMA CITY, OK | Blue Sky Bank |
| $1–2 million | BOB MOORE FORD, LLC | OKLAHOMA CITY, OK | Blue Sky Bank |
| $350,000–1 million | BOB MOORE INFINITI, LLC | OKLAHOMA CITY, OK | Blue Sky Bank |
| $350,000–1 million | BOB MOORE NW, LLC | OKLAHOMA CITY, OK | Blue Sky Bank |
| $350,000–1 million | BOB MOORE PA, LLC | OKLAHOMA CITY, OK | Blue Sky Bank |
| $350,000–1 million | BOB MOORE PONTIAC BUICK GMC, LLC | OKLAHOMA CITY, OK | Blue Sky Bank |
| $350,000–1 million | BOB MOORE SUBARU, LLC | OKLAHOMA CITY, OK | Blue Sky Bank |
| $150,000–350,000 | BOCKUS, PAYNE & ASSOCIATES ARCHITECTS | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | BODYWORX PHYSICAL THERAPY PLLC | OKLAHOMA CITY, OK | NBC Oklahoma |
| $5–10 million | BOFS MANAGEMENT LLC | OKLAHOMA CITY, OK | MidFirst Bank |
| $150,000–350,000 | BOILING POINT MEDIA, LLC | OKLAHOMA CITY, OK | International Bank of Commerce |
| $150,000–350,000 | BOKHARI HOME HEALTH CARE COOPERATION | OKLAHOMA CITY, OK | Arvest Bank |
| $350,000–1 million | BOOMER ENVIRONMENTAL LLC | OKLAHOMA CITY, OK | The First State Bank |
| $150,000–350,000 | BOSTIC TRUCK TIRES INC. | OKLAHOMA CITY, OK | The First State Bank |
| $350,000–1 million | BOYD METALS OF OKLAHOMA CITY, INC. | OKLAHOMA CITY, OK | The First National Bank of Fort Smith |
| $350,000–1 million | BOYS & GIRLS CLUBS OF OKLAHOMA COUNTY, INC. | OKLAHOMA CITY, OK | MidFirst Bank |
| $150,000–350,000 | BRAUDRICK CONSTRUCTION LLC | OKLAHOMA CITY, OK | First Bethany Bank & Trust |
| $150,000–350,000 | BRENT W. MOODY, D.D.S., P.C. | OKLAHOMA CITY, OK | Simmons Bank |
| $350,000–1 million | BREWER CONSTRUCTION OKLAHOMA, LLC | OKLAHOMA CITY, OK | Prosperity Bank |
| $1–2 million | BREWER'S CARPET & DESIGN CNTR. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | BRICKOPOLIS ENTERTAINMENT LLC | OKLAHOMA CITY, OK | Kirkpatrick Bank |
| $1–2 million | BRICKTOWN BREWERY RESTAURANTS, LLC | OKLAHOMA CITY, OK | SpiritBank |
| $350,000–1 million | BRIDESVIEW, INC. | OKLAHOMA CITY, OK | BOKF, National Association |
| $150,000–350,000 | BRIERLY PLUMBING TECHNOLOGIES | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | BRITTON LUMBER & SUPPLY, INC. | OKLAHOMA CITY, OK | First Enterprise Bank |
| $150,000–350,000 | BRITTON ROAD VETERINARY CLINIC INC. | OKLAHOMA CITY, OK | The First State Bank |
| $150,000–350,000 | BROADWAY 10 BAR & CHOPHOUSE LLC | OKLAHOMA CITY, OK | Arvest Bank |
| $350,000–1 million | BRYAN'S FLOORING, LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | BTB NW OKC OPS, LLC | OKLAHOMA CITY, OK | SpiritBank |
| $150,000–350,000 | BUDDY'S PLUMBING, INC. | OKLAHOMA CITY, OK | Simmons Bank |
| $150,000–350,000 | BUDDY'S PRODUCE OF OKLAHOMA CITY, INC. | OKLAHOMA CITY, OK | First United Bank and Trust Company |
| $150,000–350,000 | BUILDBLOCK BUILDING SYSTEMS, LLC | OKLAHOMA CITY, OK | UMB Bank, National Association |
| $150,000–350,000 | BUILDERS WAREHOUSE, INC. | OKLAHOMA CITY, OK | INTRUST Bank, National Association |
| $350,000–1 million | BUILDING CONCEPTS, LTD | OKLAHOMA CITY, OK | First Fidelity Bank |
| $150,000–350,000 | BULLARD & ASSOCIATES, PLLC | OKLAHOMA CITY, OK | CrossFirst Bank |
| $150,000–350,000 | BURGESS BUILDING COMPANY | OKLAHOMA CITY, OK | First United Bank and Trust Company |
| $350,000–1 million | BURNS PAVING CO., INC. | OKLAHOMA CITY, OK | Cross River Bank |
| $350,000–1 million | BURTON CONTROLS INC | OKLAHOMA CITY, OK | Great Plains National Bank |
| $150,000–350,000 | BUSINESS ADVISORY PARTNERS LLC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | BUSINESS PERSONNEL MANAGEMENT, INC. | OKLAHOMA CITY, OK | Arvest Bank |
| $150,000–350,000 | BUTLER BROS SAND & GRAVEL INC | OKLAHOMA CITY, OK | Prosperity Bank |
| $150,000–350,000 | BUTLER PLUMBING INC | OKLAHOMA CITY, OK | Frontier State Bank |
| $150,000–350,000 | BUTTERFIELD MEMORIAL FOUNDATION | OKLAHOMA CITY, OK | Kabbage, Inc. |
| $150,000–350,000 | BYFORD LE NORMAN CHICKASHA CDJR | OKLAHOMA CITY, OK | Bank of Commerce |
| $150,000–350,000 | BYFORD LE NORMAN DUNCAN BCG | OKLAHOMA CITY, OK | Bank of Commerce |
| $350,000–1 million | BYFORD LE NORMAN DUNCAN CDJR | OKLAHOMA CITY, OK | Bank of Commerce |
| $350,000–1 million | BYFORD-LE NORMAN CHICKASHA BG, LLC | OKLAHOMA CITY, OK | Shamrock Bank, National Association |
| $150,000–350,000 | BYRON'S LIQUOR WAREHOUSE | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | C AND Y MANAGEMENT COMPANY, INC | OKLAHOMA CITY, OK | InterBank |
| $150,000–350,000 | C GROUP CONCEPTS | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | C&D VALVE, LLC | OKLAHOMA CITY, OK | RCB Bank |
| $150,000–350,000 | C&M PRECISION, INC | OKLAHOMA CITY, OK | Peoples Bank and Trust Company |
| $150,000–350,000 | C&R STEAKS INC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | C-P INTEGRATED SERVICES, INC | OKLAHOMA CITY, OK | Central Bank of Oklahoma |
| $2–5 million | C. H. GUERNSEY & COMPANY | OKLAHOMA CITY, OK | Fidelity Bank, National Association |
| $350,000–1 million | C2 WELLNESS, LLC | OKLAHOMA CITY, OK | Great Plains National Bank |
| $150,000–350,000 | CABINET OUTLET, INC | OKLAHOMA CITY, OK | UMB Bank, National Association |
| $150,000–350,000 | CABO DEL SOL-OKC, L.L.C. | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | CAC FINANCIAL CORP. | OKLAHOMA CITY, OK | Legacy Bank |
| $150,000–350,000 | CAFE 501 CLASSEN CURVE OKC, LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | CAGR MEDICAL PLLC | OKLAHOMA CITY, OK | Prosperity Bank |
| $350,000–1 million | CALVERT'S PLANT INTERIORS INC. | OKLAHOMA CITY, OK | WebBank |
| $1–2 million | CANDID COLOR SYSTEMS, INC. | OKLAHOMA CITY, OK | Simmons Bank |
| $150,000–350,000 | CANDOR PUBLIC RELATIONS, LLC | OKLAHOMA CITY, OK | Armstrong Bank |
| $150,000–350,000 | CANNON & REFERMAT, LLC CANNON SPRING COMPANY | OKLAHOMA CITY, OK | UMB Bank, National Association |
| $350,000–1 million | CAO NGUYEN, INC. | OKLAHOMA CITY, OK | MidFirst Bank |
| $2–5 million | CAPITAL DISTRIBUTING, LLC | OKLAHOMA CITY, OK | Arvest Bank |
| $150,000–350,000 | CAPITOL ELECTRIC MOTOR REPAIR, INC | OKLAHOMA CITY, OK | The First National Bank and Trust Co, Chickasha, Oklahoma |
| $150,000–350,000 | CAPITOL LIFT TRUCK INC. | OKLAHOMA CITY, OK | First Fidelity Bank |
| $150,000–350,000 | CAR CAB WRECKER SERVICE INC. | OKLAHOMA CITY, OK | First United Bank and Trust Company |
| $150,000–350,000 | CARBY ENTERPRISES, LLC | OKLAHOMA CITY, OK | Legacy Bank |
| $350,000–1 million | CARDINAL OKC INC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | CARDINAL RIVER ENERGY I LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | CARE PLUS II INC | OKLAHOMA CITY, OK | Cross River Bank |
| $150,000–350,000 | CARE SUITES OF CHISHOLM CREEK LLC | OKLAHOMA CITY, OK | Arvest Bank |
| $150,000–350,000 | CAREER EDUCATION, INC. | OKLAHOMA CITY, OK | Watermark Bank |
| $350,000–1 million | CAREMAX, INC | OKLAHOMA CITY, OK | F & M Bank |
| $150,000–350,000 | CARESOURCE LLC | OKLAHOMA CITY, OK | MidFirst Bank |