| $350,000–1 million | JB &KL INC. | BROKEN ARROW, OK | BancFirst |
| $150,000–350,000 | JCD GROUP BPFH LLC | LAWTON, OK | BancFirst |
| $150,000–350,000 | JCD GROUP TEMPLE LLC | TEMPLE, TX | BancFirst |
| $150,000–350,000 | JCD GROUP WF LLC | WICHITA FALLS, TX | BancFirst |
| $150,000–350,000 | JENTECH CONSTRUCTION SERVICES LLC | FORT GIBSON, OK | BancFirst |
| $350,000–1 million | JIM GLOVER CDJR, LLC | OWASSO, OK | BancFirst |
| $350,000–1 million | JINNY-ANN #4 CORP | DEL CITY, OK | BancFirst |
| $350,000–1 million | JL DARLING, LLC | TACOMA, WA | BancFirst |
| $150,000–350,000 | JOE'S HOTSHOT & TRUCKING LLC | EL RENO, OK | BancFirst |
| $350,000–1 million | JOHNSONS OF KINGFISHER, INC | KINGFISHER, OK | BancFirst |
| $150,000–350,000 | JOSEY SKATELAND INC | LEWISVILLE, TX | BancFirst |
| $150,000–350,000 | JSW PROPERTIES, INC | PONCA CITY, OK | BancFirst |
| $150,000–350,000 | JT PAINT AND DESIGN, LLC | BARTLESVILLE, OK | BancFirst |
| $150,000–350,000 | JTR CONSTRUCTION AND MAINTENANCE LLC | MUSKOGEE, OK | BancFirst |
| $150,000–350,000 | JUST 4 A CHILD, INC. | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | JYOCHAM TRUCKING | COWETA, OK | BancFirst |
| $150,000–350,000 | K.B. SAND, INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | KALIDY LLC | EDMOND, OK | BancFirst |
| $350,000–1 million | KALOGRIDIS INTERNATIONAL, LTD | DALLAS, TX | BancFirst |
| $150,000–350,000 | KATIE SENIOR CARE, LLC | NORMAN, OK | BancFirst |
| $150,000–350,000 | KAYSER MECHANICAL INC | LAWTON, OK | BancFirst |
| $150,000–350,000 | KDG AUTOMOTIVE, INC | WAGONER, OK | BancFirst |
| $150,000–350,000 | KELLE OIL COMPANY LLC | BRAMAN, OK | BancFirst |
| $150,000–350,000 | KELLEY JEWELERS LLC | WEATHERFORD, OK | BancFirst |
| $350,000–1 million | KEMPTON GROUP HOLDINGS INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | KERNS CONSTRUCTION, INC. | STILLWATER, OK | BancFirst |
| $150,000–350,000 | KEYSTONE ENGINEERING AND LAND SURVEYING, INC. | STILLWATER, OK | BancFirst |
| $150,000–350,000 | KHEZRI BROTHERS, INC. | TULSA, OK | BancFirst |
| $150,000–350,000 | KIAMICHI CHEVROLET, INC | BROKEN BOW, OK | BancFirst |
| $1–2 million | KIAMICHI ELECTRIC COOPERATIVE, INC. | WILBURTON, OK | BancFirst |
| $350,000–1 million | KINDFUL HOSPICE I, LLC | ADA, OK | BancFirst |
| $350,000–1 million | KING ELECTRIC LLC | EL RENO, OK | BancFirst |
| $350,000–1 million | KIPP OKC COLLEGE PREP | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | KLAUS, INC. | CUSHING, OK | BancFirst |
| $150,000–350,000 | KLEAN-R-US JANITORIAL SERVICE INC | MCALESTER, OK | BancFirst |
| $150,000–350,000 | KNUTSON IRRIGATION DESIGN LLC | YUKON, OK | BancFirst |
| $150,000–350,000 | KOMEX LTD | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | KOSTA'S INC | DALLAS, TX | BancFirst |
| $350,000–1 million | KUDRON READY MIX, INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | L A KING, LLC | TULSA, OK | BancFirst |
| $350,000–1 million | L AND J ACQUISITIONS, LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | L MYLES SMITH & CO, PC | EDMOND, OK | BancFirst |
| $150,000–350,000 | L R TOBY TRUCKING INC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | L&L RETAIL CONSTRUCTION, LLC | NORMAN, OK | BancFirst |
| $150,000–350,000 | L-7 DESIGN, INC | DALLAS, TX | BancFirst |
| $150,000–350,000 | LA FIESTA MEXICAN RESTAURANT CORPORATION | DUNCAN, OK | BancFirst |
| $150,000–350,000 | LA UNION 4 LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | LA UNION 5 LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | LA UNION 7 LLC | TULSA, OK | BancFirst |
| $150,000–350,000 | LA UNION 8 LLC | TULSA, OK | BancFirst |
| $150,000–350,000 | LA UNION DOS, INC | TULSA, OK | BancFirst |
| $350,000–1 million | LAMB MANAGEMENT COMPANY, LLC | TULSA, OK | BancFirst |
| $150,000–350,000 | LANCE DOYLE, DC PC | YUKON, OK | BancFirst |
| $350,000–1 million | LANCE RUFFEL OIL & GAS, LLC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | LAND ROVER TULSA, LLC | TULSA, OK | BancFirst |
| $350,000–1 million | LANGSTON CO | OKLAHOMA CITY, OK | BancFirst |
| $5–10 million | LARK, LLC | ADDISON, TX | BancFirst |
| $350,000–1 million | LARRY BREWER DENTAL LAB INC. | TULSA, OK | BancFirst |
| $150,000–350,000 | LAS TRANCAS INC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | LAST FRONTIER COUNCIL INC. BOY SCOUTS OF AMERICA | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | LAWTON LODGING LLC | AUSTIN, TX | BancFirst |
| $150,000–350,000 | LEADERSHIP ISD INC | DALLAS, TX | BancFirst |
| $150,000–350,000 | LEBE ENTERPRISES LLC | LAWTON, OK | BancFirst |
| $150,000–350,000 | LEE CONSTRUCTION & MAINTENANCE COMPANY | HOUSTON, TX | BancFirst |
| $150,000–350,000 | LEGACY CONSTRUCTION AND DEVELOPMENT CORPORATION | MIDWEST CITY, OK | BancFirst |
| $150,000–350,000 | LEONARD BUILDING COMPANY LLC | OKLAHOMA CITY, OK | BancFirst |
| $2–5 million | LEP HOLDINGS LLC | EDMOND, OK | BancFirst |
| $150,000–350,000 | LETTERING EXPRESS OK INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | LEVY STRANGE BEFFORT LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | LEWIS JEWELERS, INC. | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | LEXUS OF TULSA | TULSA, OK | BancFirst |
| $2–5 million | LI-SI-WI-NWI HEALTH, INC. | SHAWNEE, OK | BancFirst |
| $350,000–1 million | LIFE PACE, INC | TULSA, OK | BancFirst |
| $350,000–1 million | LIFE SENIOR SERVICES, INC | TULSA, OK | BancFirst |
| $1–2 million | LIGHTHOUSE ELECTRIC LLC | TULSA, OK | BancFirst |
| $1–2 million | LINGO CONSTRUCTIN SERVICES, INC. | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | LIPPE FEDERAL LLC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | LIPPERT BROS, INC. | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | LMR DESTINATIONS LLC | SAINT HELENA, CA | BancFirst |
| $150,000–350,000 | LMR SERVICES LLC | SAINT HELENA, CA | BancFirst |
| $350,000–1 million | LMR WINE ESTATES LLC | SAINT HELENA, CA | BancFirst |
| $350,000–1 million | LOEWINSOHN FLEGLE DEARY SIMON LLP | DALLAS, TX | BancFirst |
| $150,000–350,000 | LOGAN COUNTY ASSOC FOR RETARDED CITIZENS, INC | GUTHRIE, OK | BancFirst |
| $350,000–1 million | LOGOS CONSTRUCTION CO. LLC | SAND SPRINGS, OK | BancFirst |
| $150,000–350,000 | LONG WAVE SERVICES, INC. | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | LONG WAVE, INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | LORRAINE T. WILSON, M.D., PC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | LOUIE'S AT BROOKHAVEN, L.L.C. | NORMAN, OK | BancFirst |
| $150,000–350,000 | LOUIE'S ON THE LAKE, LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | LOUIE'S-HIGHLAND PARK, LLC | EDMOND, OK | BancFirst |
| $150,000–350,000 | LOUIE'S-JENKS, LLC | JENKS, OK | BancFirst |
| $150,000–350,000 | LOUIE'S-LYNN LANE LLC | BROKEN ARROW, OK | BancFirst |
| $150,000–350,000 | LOUIE'S-STILLWATER, LLC | STILLWATER, OK | BancFirst |
| $150,000–350,000 | LOUIE'S-YUKON, LLC | YUKON, OK | BancFirst |
| $350,000–1 million | LOVE, BEAL, & NIXON, PC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | LPR ENERGY, LLC | CLEARFIELD, PA | BancFirst |
| $350,000–1 million | LS HOLDCO, LLC | AUSTIN, TX | BancFirst |
| $350,000–1 million | LTR FASTENER AND SUPPLY, LLC | OKLAHOMA CITY, OK | BancFirst |
| $2–5 million | LUGREG TRUCKING LLC | KINGFISHER, OK | BancFirst |
| $1–2 million | LUMIN EDUCATION | DALLAS, TX | BancFirst |