| $350,000–1 million | GLOBAL INDUSTRIAL, INC. | TULSA, OK | Security Bank |
| $150,000–350,000 | GLOBAL RETREATS LLC | TULSA, OK | WebBank |
| $350,000–1 million | GLOBAL SCAFFOLDING & INSULATION, LLC | TULSA, OK | Security Bank |
| $350,000–1 million | GLOBE X-RAY SERVICES, INC. | TULSA, OK | American Heritage Bank |
| $1–2 million | GLOVER CHEVROLET WEST LLC | TULSA, OK | BancFirst |
| $350,000–1 million | GNC CONCRETE PRODUCTS INC | TULSA, OK | Grand Bank |
| $150,000–350,000 | GOFIT | TULSA, OK | MidFirst Bank |
| $150,000–350,000 | GOLD STAR SECURITY AND INVESTIGATION, INC | TULSA, OK | Triad Bank, National Association |
| $150,000–350,000 | GOOD SAMARITAN HEALTH SERVICES, INC. | TULSA, OK | Security Bank |
| $1–2 million | GRACE HOSPICE OF OKLAHOMA, LLC. | TULSA, OK | Arvest Bank |
| $150,000–350,000 | GRAND EMPLOYEES, LLC | TULSA, OK | BancFirst |
| $150,000–350,000 | GRAVES MCLAIN, PLLC | TULSA, OK | BancFirst |
| $350,000–1 million | GREEN COUNTRY AIRCRAFT EXHAUST, INC. | TULSA, OK | First State Bank |
| $1–2 million | GREEN COUNTRY EMERGENCY PHYSICIANS GROUP OF TULSA, PLLC | TULSA, OK | The First National Bank and Trust Company of Broken Arrow |
| $1–2 million | GREEN COUNTRY INTERIORS INC | TULSA, OK | Central Bank of Oklahoma |
| $350,000–1 million | GREEN COUNTRY MEDICAL MANAGEMENT LLC | TULSA, OK | Regent Bank |
| $150,000–350,000 | GREEN COUNTRY TESTING INC | TULSA, OK | American Heritage Bank |
| $150,000–350,000 | GREEN METAL FABRICATORS | TULSA, OK | Vast Bank, National Association |
| $150,000–350,000 | GREG RATLIFF MD INC | TULSA, OK | First Oklahoma Bank |
| $2–5 million | GREYSTONE LOGISTICS, INC | TULSA, OK | International Bank of Commerce |
| $150,000–350,000 | GRIDDLE LLC | TULSA, OK | City Bank |
| $150,000–350,000 | GSI ASC, LLC | TULSA, OK | Commerce Bank |
| $150,000–350,000 | GT VETERINARY ASSOCIATES, LLC | TULSA, OK | Commerce Bank |
| $1–2 million | GTP MANAGEMENT COMPANY LLC | TULSA, OK | American Bank and Trust Company |
| $350,000–1 million | GUTS CHURCH, INC | TULSA, OK | Central Bank of Oklahoma |
| $350,000–1 million | GUY ENGINEERING SERVICES, INC. | TULSA, OK | Commerce Bank |
| $150,000–350,000 | GWACS DEFENSE INC | TULSA, OK | Blue Sky Bank |
| $150,000–350,000 | H & L TOOTH COMPANY | TULSA, OK | Bank of America, National Association |
| $150,000–350,000 | H.W. ALLEN CO., LLC | TULSA, OK | Sunflower Bank, National Association |
| $2–5 million | HALL, ESTILL, HARDWICK, GABLE, GOLDEN & NELSON, P.C. | TULSA, OK | MidFirst Bank |
| $150,000–350,000 | HAMBRICK-FERGUSON, INC | TULSA, OK | Veritex Community Bank |
| $150,000–350,000 | HAMPTON CREATIVE, INC | TULSA, OK | First Bank of Owasso |
| $150,000–350,000 | HANDCRAFTED OKLAHOMA, LLC | TULSA, OK | Commerce Bank |
| $150,000–350,000 | HANLOCK-CAUSEWAY COMPANY, LLC | TULSA, OK | BOKF, National Association |
| $350,000–1 million | HAPPY CAMPERS ACADEMY LLC | TULSA, OK | BancFirst |
| $150,000–350,000 | HARDEN & ASSOCIATES SURVEYING AND MAPPING, PC | TULSA, OK | BancFirst |
| $150,000–350,000 | HARDESTY AVIATION LLC | TULSA, OK | Mabrey Bank |
| $150,000–350,000 | HARLEY HOLLAN COMPANIES | TULSA, OK | CrossFirst Bank |
| $150,000–350,000 | HARMON SECURITY GROUP LLC | TULSA, OK | Blue Sky Bank |
| $150,000–350,000 | HARP SERVICES, INC | TULSA, OK | BancFirst |
| $1–2 million | HARVARD FAMILY PHYSICIANS PC | TULSA, OK | Security Bank |
| $350,000–1 million | HASTY-BAKE INC. | TULSA, OK | AVB Bank |
| $350,000–1 million | HCCCO, LLC | TULSA, OK | The Exchange Bank |
| $150,000–350,000 | HEADRICK PLUMBING CO., INC. | TULSA, OK | BancFirst |
| $350,000–1 million | HEALTHCARE ACCOUNTING AND BILLING SERVICES, LLC | TULSA, OK | BOKF, National Association |
| $2–5 million | HEAT TRANSFER EQUIPMENT COMPANY | TULSA, OK | BOKF, National Association |
| $1–2 million | HEATER FABRICTORS OF TULSA, LLC | TULSA, OK | Arvest Bank |
| $150,000–350,000 | HEATHERIDGE HEALTH CARE, LLC | TULSA, OK | BOKF, National Association |
| $350,000–1 million | HEATWAVE SUPPLY, INC. | TULSA, OK | BancFirst |
| $150,000–350,000 | HEMPHILL, LLC | TULSA, OK | First Oklahoma Bank |
| $150,000–350,000 | HEMPIRE CAPITAL, INC. | TULSA, OK | Regent Bank |
| $150,000–350,000 | HENDERSON & RAMSEY, PC | TULSA, OK | Arvest Bank |
| $150,000–350,000 | HERCULES TIRE SALES, INC. | TULSA, OK | First Oklahoma Bank |
| $150,000–350,000 | HERITAGE CONCRETE CONSTRUCTION, INC | TULSA, OK | Triad Bank, National Association |
| $350,000–1 million | HICORP, INC | TULSA, OK | BancFirst |
| $2–5 million | HIDEAWAY- 2 INC | TULSA, OK | MidFirst Bank |
| $150,000–350,000 | HIGHER STANDARD HEALTHCARE LLC | TULSA, OK | Cross River Bank |
| $150,000–350,000 | HINKLE & COMPANY, PC | TULSA, OK | First Oklahoma Bank |
| $1–2 million | HIRECALL LICENSING, LLC | TULSA, OK | Firstar Bank |
| $150,000–350,000 | HISC TULSA, INC | TULSA, OK | RCB Bank |
| $150,000–350,000 | HIV RESOURCE CONSORTIUM, INC. | TULSA, OK | BOKF, National Association |
| $150,000–350,000 | HODGES TRANSPORTATION INC | TULSA, OK | Security Bank |
| $350,000–1 million | HOFFMAN BUSINESS ENTERPRISES INC | TULSA, OK | Security Bank |
| $150,000–350,000 | HOFFMEIER, INC. | TULSA, OK | AVB Bank |
| $2–5 million | HOGAN ASSESSMENT SYSTEMS, INC. | TULSA, OK | Prosperity Bank |
| $2–5 million | HOGANTAYLOR LLP | TULSA, OK | Arvest Bank |
| $150,000–350,000 | HOLLY MATERIAL HANDLING EQUIPMENT INC | TULSA, OK | AVB Bank |
| $150,000–350,000 | HORIZON ENTERPRISES, LTD | TULSA, OK | Security Bank |
| $350,000–1 million | HORIZON LAWN AND LANDSCAPE INC. | TULSA, OK | Simmons Bank |
| $150,000–350,000 | HORTON HYDRAULICS, INC. | TULSA, OK | Central Bank of Oklahoma |
| $150,000–350,000 | HORTON INDUSTRIES, INC. | TULSA, OK | Central Bank of Oklahoma |
| $150,000–350,000 | HOSPICE OF GREEN COUNTRY INC | TULSA, OK | BOKF, National Association |
| $350,000–1 million | HOUCHIN ELECTRIC COMPANY, INC. | TULSA, OK | SpiritBank |
| $150,000–350,000 | HOUDELIFE HOLDINGS LLC | TULSA, OK | First Oklahoma Bank |
| $150,000–350,000 | HOULIGAN ENTERPRISES | TULSA, OK | Arvest Bank |
| $150,000–350,000 | HOURGLASS REPAIR CENTER SOUTH LLC | TULSA, OK | Regent Bank |
| $150,000–350,000 | HSH-TAPESTRY OWNER OK, LLC | TULSA, OK | Synovus Bank |
| $150,000–350,000 | HUDSON PLUMBING HEATING AND AIR CONDITIONING, INC. | TULSA, OK | American Bank and Trust Company |
| $1–2 million | HUGHES ANDERSON HEAT EXCHANGERS, INC. | TULSA, OK | American Bank and Trust Company |
| $350,000–1 million | HUMAN SKILLS & RESOURCES INC | TULSA, OK | BOKF, National Association |
| $150,000–350,000 | HYDRANT REPAIR PARTS INC. | TULSA, OK | Mabrey Bank |
| $150,000–350,000 | IDEAL SPECIALTY INC | TULSA, OK | First Fidelity Bank |
| $150,000–350,000 | ILIFF AIRCRAFT REPAIR AND SERVICE COMPANY INC | TULSA, OK | Prosperity Bank |
| $1–2 million | IMAX CORPORATION | TULSA, OK | BancFirst |
| $150,000–350,000 | IMPACT PRODUCTIONS, INC. | TULSA, OK | First Oklahoma Bank |
| $5–10 million | INCEED LLC | TULSA, OK | First Pryority Bank |
| $2–5 million | INDIAN HEALTH CARE RESOURCE CENTER OF TULSA, INC | TULSA, OK | Commerce Bank |
| $350,000–1 million | INDIAN NATIONS COUNCIL, INC BOY SCOUTS OF AMERICA | TULSA, OK | Arvest Bank |
| $350,000–1 million | INDUSTRIAL CONTROLS OF OKLAHOMA, LLC | TULSA, OK | Security Bank |
| $150,000–350,000 | INDUSTRIAL FABRICATION SERVICES, LLC | TULSA, OK | BancFirst |
| $5–10 million | INDUSTRIAL PIPING SPECIALISTS INC. | TULSA, OK | Mabrey Bank |
| $150,000–350,000 | INDUSTRIAL SPLICING & SLING | TULSA, OK | Central Bank of Oklahoma |
| $350,000–1 million | INFINEDI LLC | TULSA, OK | CrossFirst Bank |
| $150,000–350,000 | INJURY PREVENTION SOLUTIONS, INC | TULSA, OK | MidFirst Bank |
| $150,000–350,000 | INTEGRITY CUSTOMS INC. | TULSA, OK | CrossFirst Bank |
| $350,000–1 million | INTEGRITY STAFFING SOLUTIONS, LLC | TULSA, OK | Mabrey Bank |
| $150,000–350,000 | INTERCHANGE RX, LLC | TULSA, OK | Firstar Bank |
| $350,000–1 million | INTERIM HEALTHCARE OF OKLAHOMA CITY, INC. | TULSA, OK | Blue Sky Bank |
| $350,000–1 million | INTERIM HEALTHCARE OF TULSA, INC | TULSA, OK | BancFirst |
| $350,000–1 million | INTERIORS ONE, INC. | TULSA, OK | RCB Bank |