| $150,000–350,000 | OK FAB AND MACHINING, LLC | TULSA, OK | Morton Community Bank |
| $350,000–1 million | OK FILTER CO,, INC. | TULSA, OK | First National Bank of Oklahoma |
| $1–2 million | OKLAHOMA CANCER SPECIALIST MANAGEMENT, LLC | TULSA, OK | Prosperity Bank |
| $2–5 million | OKLAHOMA CANCER SPECIALISTS AND RESEARCH INSTITUTE, LLC | TULSA, OK | Prosperity Bank |
| $150,000–350,000 | OKLAHOMA CANOPIES AND AWNINGS, LLC | TULSA, OK | Security Bank |
| $150,000–350,000 | OKLAHOMA CENTENNIAL BOTANICAL GARDEN INC | TULSA, OK | Blue Sky Bank |
| $350,000–1 million | OKLAHOMA CHILLER CORPORATION | TULSA, OK | BancFirst |
| $150,000–350,000 | OKLAHOMA DISABILITY LAW CENTER | TULSA, OK | Regent Bank |
| $150,000–350,000 | OKLAHOMA DISASTER RESTORATION & CLEANING SPECIALISTS, INC. | TULSA, OK | Arvest Bank |
| $350,000–1 million | OKLAHOMA FORGE LLC | TULSA, OK | BOKF, National Association |
| $150,000–350,000 | OKLAHOMA LANDSCAPE INC. | TULSA, OK | Grand Bank |
| $150,000–350,000 | OKLAHOMA LEARNING LLC | TULSA, OK | First Bank of Owasso |
| $150,000–350,000 | OKLAHOMA MEDICAL BILLING INC | TULSA, OK | BOKF, National Association |
| $2–5 million | OKLAHOMA METHODIST MANOR, INC | TULSA, OK | Prosperity Bank |
| $150,000–350,000 | OKLAHOMA POLICY, INC. | TULSA, OK | BOKF, National Association |
| $150,000–350,000 | OKLAHOMA SHAMROCK SALES INC | TULSA, OK | BMO Bank National Association |
| $350,000–1 million | OKLAHOMA STAFFING SPECIALISTS, LLC | TULSA, OK | Regent Bank |
| $350,000–1 million | OKLAHOMA VETERINARY SPECIALIST, LLC | TULSA, OK | Arvest Bank |
| $150,000–350,000 | OKLAHOMA VETERINARY SURGERY, LLC | TULSA, OK | First United Bank and Trust Company |
| $350,000–1 million | OKLAHOMA VISION DEVELOPMENT CENTER, INC., P.C. | TULSA, OK | Arvest Bank |
| $150,000–350,000 | OLIFANT ENERGY LLC | TULSA, OK | Commerce Bank |
| $150,000–350,000 | OLYMPIA ANESTHESIA PLC | TULSA, OK | BOKF, National Association |
| $150,000–350,000 | OMECORP, L.L.C. | TULSA, OK | Security Bank |
| $350,000–1 million | OMNI AIR TRANSPORT, LLC | TULSA, OK | BOKF, National Association |
| $150,000–350,000 | ON THE CUSP PEDIATRIC DENTISTRY, PLLC | TULSA, OK | Arvest Bank |
| $1–2 million | OPTRONICS INTERNATIONAL LLC | TULSA, OK | BOKF, National Association |
| $350,000–1 million | ORAL ROBERTS EVANGELISTIC ASSOCIATION, INC. | TULSA, OK | BOKF, National Association |
| $150,000–350,000 | ORCA OPERATING COMPANY, LLC | TULSA, OK | Commerce Bank |
| $150,000–350,000 | ORION EXPLORATION, LLC | TULSA, OK | CrossFirst Bank |
| $150,000–350,000 | ORTHOPEDIC & TRAUMA SERVICE OF OKLAHOMA,PC | TULSA, OK | WeStreet Federal Credit Union |
| $5–10 million | OSAGE NATION GAMING ENTERPRISE | TULSA, OK | BOKF, National Association |
| $150,000–350,000 | OSAKA SUSHI KDBT, INC | TULSA, OK | Security Bank |
| $150,000–350,000 | OSTEOPATHIC PHYSICIANS OF TULSA | TULSA, OK | BOKF, National Association |
| $150,000–350,000 | OUR JOYS MULTIPLIED, LLC | TULSA, OK | Grand Bank |
| $350,000–1 million | OVERHEAD DOOR COMPANY OF TULSA | TULSA, OK | Mabrey Bank |
| $350,000–1 million | OVERHEAD DOOR OF TULSA RESIDENTIAL, INC. | TULSA, OK | CrossFirst Bank |
| $150,000–350,000 | P&M INDUSTRIES INC | TULSA, OK | The First National Bank and Trust Company of Broken Arrow |
| $150,000–350,000 | P&P INDUSTRIAL PAINT INC | TULSA, OK | Arvest Bank |
| $2–5 million | PACESETTER CLAIMS SERVICES, IC. | TULSA, OK | Security Bank |
| $1–2 million | PACESETTER TEMPORARY SERVICES, LLC | TULSA, OK | Security Bank |
| $150,000–350,000 | PAISA PRODUCE LLC | TULSA, OK | Arvest Bank |
| $350,000–1 million | PALMER CONTINUUM OF CARE, INC | TULSA, OK | Arvest Bank |
| $150,000–350,000 | PALMETTO MIDWEST FITNESS, INC. | TULSA, OK | JPMorgan Chase Bank, National Association |
| $2–5 million | PARKSIDE INC | TULSA, OK | BOKF, National Association |
| $150,000–350,000 | PART TIME PROS | TULSA, OK | Regent Bank |
| $350,000–1 million | PATHOLOGY LABORATORY ASSOCIATES INC | TULSA, OK | BOKF, National Association |
| $150,000–350,000 | PATRICK HOME CARE LLC | TULSA, OK | First Pryority Bank |
| $150,000–350,000 | PATTON ENTERPRISES, INC | TULSA, OK | Bank of America, National Association |
| $350,000–1 million | PAUL DAVIS SYSTEMS OF TULSA INC | TULSA, OK | Arvest Bank |
| $350,000–1 million | PAUL DAVIS SYSTEMS OF TULSA, INC | TULSA, OK | Arvest Bank |
| $2–5 million | PAUL TRANSPORTATION | TULSA, OK | TBK Bank, SSB |
| $350,000–1 million | PAYNE-HUBER ENGINEERING, INC. | TULSA, OK | Firstar Bank |
| $150,000–350,000 | PBX CORPORATION | TULSA, OK | Arvest Bank |
| $150,000–350,000 | PDG, LLC | TULSA, OK | Commerce Bank |
| $150,000–350,000 | PEACE ACADEMY | TULSA, OK | Arvest Bank |
| $350,000–1 million | PEDIATRIC AND ADOLESCENT CARE, LLP | TULSA, OK | First Oklahoma Bank |
| $350,000–1 million | PEDIATRIC CARDIOLOGY OF OKLAHOMA PLLC | TULSA, OK | Triad Bank, National Association |
| $350,000–1 million | PEDIATRIC OPHTHALMOLOGY INC | TULSA, OK | BancFirst |
| $150,000–350,000 | PEDIATRIC SPECIALISTS OF TULSA, PLLC | TULSA, OK | Firstar Bank |
| $150,000–350,000 | PEDISTAT, PLLC | TULSA, OK | International Bank of Commerce |
| $2–5 million | PEI INDUSTRIES, LLC | TULSA, OK | American Heritage Bank |
| $150,000–350,000 | PENCORE ENGINEERING & CONSULTANTS, LLC | TULSA, OK | American Bank and Trust Company |
| $350,000–1 million | PERFORMANCE.ROOFING INCORPORATE | TULSA, OK | Mabrey Bank |
| $150,000–350,000 | PERRINE, REDEMANN, BERRY, TAYLOR & FRETTE, PLLC | TULSA, OK | MidFirst Bank |
| $150,000–350,000 | PERSIMMON RIDGE LLC | TULSA, OK | First Oklahoma Bank |
| $350,000–1 million | PETROSOURCE LLC | TULSA, OK | BOKF, National Association |
| $350,000–1 million | PHILBROOK MUSEUM OF ART | TULSA, OK | Blue Sky Bank |
| $150,000–350,000 | PHILLIPS + GOMEZ, INC. | TULSA, OK | BOKF, National Association |
| $2–5 million | PHOENIX HEALTHCARE LLC | TULSA, OK | BancFirst |
| $350,000–1 million | PHOENIX REHAB, LLC | TULSA, OK | BancFirst |
| $150,000–350,000 | PHOS GROUP, LLC | TULSA, OK | The Central Trust Bank |
| $150,000–350,000 | PHYSICAL REHABILITATION CENTER ON MINGO LLC | TULSA, OK | First Oklahoma Bank |
| $150,000–350,000 | PINNACLE INDUSTRY LLC | TULSA, OK | Stride Bank, National Association |
| $150,000–350,000 | PINNACLE MANAGEMENT GROUP, INC. | TULSA, OK | First United Bank and Trust Company |
| $150,000–350,000 | PINSTON'S TURF SERVICES, INC. | TULSA, OK | Arvest Bank |
| $350,000–1 million | PIPEGLOVE LLC | TULSA, OK | Security Bank |
| $150,000–350,000 | PLAN B SERVICES & SOLUTIONS, LLC | TULSA, OK | First Oklahoma Bank |
| $150,000–350,000 | PLASTIC ENGINEERING COMPANY OF TULSA INC | TULSA, OK | Arvest Bank |
| $1–2 million | PLATINUM MECHANICAL, LLC | TULSA, OK | Mabrey Bank |
| $150,000–350,000 | PLATINUM VENTURES, INC | TULSA, OK | Mabrey Bank |
| $150,000–350,000 | PLAYLATER INC. | TULSA, OK | The City National Bank and Trust Company of Lawton, Oklahoma |
| $150,000–350,000 | PM TULSA, LLC | TULSA, OK | Bank of America, National Association |
| $150,000–350,000 | POOL CREATIONS, INC | TULSA, OK | RCB Bank |
| $350,000–1 million | POWER & CONTROL ENGINEERING SOLUTIONS LLC | TULSA, OK | Blue Sky Bank |
| $350,000–1 million | PPT SOLUTIONS LLC | TULSA, OK | First Oklahoma Bank |
| $150,000–350,000 | PRACTICE EVOLUTIONS LLC | TULSA, OK | First Oklahoma Bank |
| $350,000–1 million | PRAIRIE GAS COMPANY OF OKLAHOMA LLC | TULSA, OK | TransPecos Banks, SSB. |
| $350,000–1 million | PRAY WALKER PC | TULSA, OK | Commerce Bank |
| $150,000–350,000 | PREAUS LANDSCAPE OF TULSA L.L.C. | TULSA, OK | The Central Trust Bank |
| $150,000–350,000 | PRECISION ENGINEERING, LLC | TULSA, OK | RCB Bank |
| $150,000–350,000 | PRECISION EQUITY LLC | TULSA, OK | Mabrey Bank |
| $150,000–350,000 | PREFERRED BUSINESS SYSTEMS, LLC AND COPY WORLD BUSINESS SOLU | TULSA, OK | Triad Bank, National Association |
| $150,000–350,000 | PREMIER ORTHOPEDIC SPECIALISTS OF TULSA, LLC | TULSA, OK | WeStreet Federal Credit Union |
| $150,000–350,000 | PREMIERE INTERIORS, LLC | TULSA, OK | Arvest Bank |
| $150,000–350,000 | PREMIERFLOW, LLC | TULSA, OK | BOKF, National Association |
| $350,000–1 million | PRESCOR LLC | TULSA, OK | First Oklahoma Bank |
| $350,000–1 million | PRESTON-EASTIN, INC. | TULSA, OK | Enterprise Bank & Trust |
| $350,000–1 million | PRICE FAMILY PROPERTIES, LLC | TULSA, OK | Arvest Bank |
| $2–5 million | PRIME INDUSTRIAL RECRUITERS,IN | TULSA, OK | Mabrey Bank |
| $1–2 million | PRIMEFORCE INC | TULSA, OK | Mabrey Bank |