| $350,000–1 million | OBERROC, L.L.C. | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | OBLATE SCHOOL OF THEOLOGY | SAN ANTONIO, TX | Bank of Belleville |
| $150,000–350,000 | OFFICESOURCE LTD | SAN ANTONIO, TX | TransPecos Banks, SSB. |
| $150,000–350,000 | OHANA PEDIATRIC HOME HEALTH LLC | SAN ANTONIO, TX | BBVA USA |
| $350,000–1 million | OILFIELD EQUIPMENT MARKETING INC | SAN ANTONIO, TX | JPMorgan Chase Bank, National Association |
| $150,000–350,000 | OK TOURS, LLC | SAN ANTONIO, TX | Riverview Bank |
| $150,000–350,000 | OKRENT FLOORCOVERING CORP. | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | OLD ENGLANDS LION & ROSE RIM, LLC | SAN ANTONIO, TX | The Bank of San Antonio |
| $150,000–350,000 | OLIVE JUICE, LLC | SAN ANTONIO, TX | Frost Bank |
| $2–5 million | OMNI LA MANSION CORPORATION | SAN ANTONIO, TX | Origin Bank |
| $350,000–1 million | ON THE SPOT MANAGEMENT, LLC | SAN ANTONIO, TX | JPMorgan Chase Bank, National Association |
| $350,000–1 million | ON3 LOGISTICS, LLC | SAN ANTONIO, TX | SouthWest Bank |
| $150,000–350,000 | ONARDEM VENTURES INC. | SAN ANTONIO, TX | Spirit of Texas Bank, SSB |
| $350,000–1 million | ONCE UPON A TIME HOME HEALTH LLC | SAN ANTONIO, TX | JPMorgan Chase Bank, National Association |
| $350,000–1 million | ONETOUCH DIRECT - SAN ANTONIO LLC | SAN ANTONIO, TX | Republic Bank & Trust Company |
| $350,000–1 million | OPCION UNO, LTD. | SAN ANTONIO, TX | Broadway National Bank |
| $150,000–350,000 | OPEN STUDIO ARCHITECTURE PLLC, | SAN ANTONIO, TX | The Bank of San Antonio |
| $1–2 million | OPERATION HOMEFRONT INC | SAN ANTONIO, TX | Bank of America, National Association |
| $350,000–1 million | OPERATIONAL TECHNOLOGIES, ETAL | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | OPHTHALMOLOGY ASSOCIATES OF SAN ANTONIO | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | OPIELA MECHANICAL INC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | OPSOLUTIONS, LLC | SAN ANTONIO, TX | Trustmark National Bank |
| $350,000–1 million | OPTECH ENTERPRISE SOLUTIONS, LP | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | OPTECH GENTE INC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | ORAL DESIGNS, INC. | SAN ANTONIO, TX | Broadway National Bank |
| $1–2 million | ORANGEBOX ENTERPRISES LEASING, INC. | SAN ANTONIO, TX | Texas Capital Bank, National Association |
| $150,000–350,000 | ORIENTAL RUG GALLERY, L.P. | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | ORORIAN, GUEST & LITTLE, P.C. | SAN ANTONIO, TX | Jefferson Bank |
| $150,000–350,000 | ORTHOPAEDIC AND NEUROMUSCULAR REHABILITATION INSTITUTE PC | SAN ANTONIO, TX | Zions Bank, A Division of |
| $350,000–1 million | ORTHOPAEDIC SURGERY CENTER OF SAN ANTONIO, L.P. | SAN ANTONIO, TX | Zions Bank, A Division of |
| $150,000–350,000 | ORTHOPEDIC PERFORMANCE INSTITUTE PLLC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | ORTIZ & BATIS PC | SAN ANTONIO, TX | Bank of America, National Association |
| $150,000–350,000 | ORTIZ PHARMACY, INC. | SAN ANTONIO, TX | Intuit Financing Inc. |
| $350,000–1 million | OSBORN HEIRS COMPANY, LTD | SAN ANTONIO, TX | Comerica Bank |
| $1–2 million | OSI VISION, LLC | SAN ANTONIO, TX | Truist Bank d/b/a Branch Banking & Trust Co |
| $350,000–1 million | OUR LADY OF THE ATONEMENT | SAN ANTONIO, TX | Jefferson Bank |
| $5–10 million | OUR LADY OF THE LAKE UNIVERSITY OF SAN ANTONIO | SAN ANTONIO, TX | Broadway National Bank |
| $350,000–1 million | OVATION FINANCIAL SERVICES, LP | SAN ANTONIO, TX | Hancock Whitney Bank |
| $150,000–350,000 | OVEANA, LLC | SAN ANTONIO, TX | American Bank, National Association |
| $150,000–350,000 | OVERHEAD DOOR COMPANY OF S.A. | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | OVERLAND PARTNERS, INC. | SAN ANTONIO, TX | Broadway National Bank |
| $150,000–350,000 | P & S SCALE CO., INC. | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | P3S CORPORATION | SAN ANTONIO, TX | Newtek Small Business Finance, Inc. |
| $350,000–1 million | PACIFIC SHORE HOLDING INC | SAN ANTONIO, TX | American Bank, National Association |
| $150,000–350,000 | PACKARD LAW FIRM PLLC | SAN ANTONIO, TX | The Bank of San Antonio |
| $150,000–350,000 | PACKARD LAW FIRM PLLC | SAN ANTONIO, TX | The Bank of San Antonio |
| $1–2 million | PAESANOS AT BASSE HOLDINGS LLP | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | PAGE BARTEAU CATERING, INC. | SAN ANTONIO, TX | TransPecos Banks, SSB. |
| $150,000–350,000 | PAL OPERATING COMPANY LLC | SAN ANTONIO, TX | Bank of America, National Association |
| $2–5 million | PALACIO DEL RIO, INC. | SAN ANTONIO, TX | Broadway National Bank |
| $150,000–350,000 | PALADIN PRIME, LLC. | SAN ANTONIO, TX | Celtic Bank Corporation |
| $350,000–1 million | PALENQUE GRILL LA CANTERA, LLC | SAN ANTONIO, TX | Vantage Bank Texas |
| $150,000–350,000 | PALLADIUM CORRAL LLC | SAN ANTONIO, TX | US Eagle FCU |
| $150,000–350,000 | PALLADIUM MEDIA, LLC | SAN ANTONIO, TX | The Bank of San Antonio |
| $350,000–1 million | PALLET REPAIR SERVICES, S.A. INC | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | PALLIATIVE PLUS LLC DBA DIGNITY HOSPICE OF SAN ANTONIO | SAN ANTONIO, TX | JPMorgan Chase Bank, National Association |
| $150,000–350,000 | PAN REY INT'L, INC. DBA EL FOLKLOR BAKERY | SAN ANTONIO, TX | JPMorgan Chase Bank, National Association |
| $350,000–1 million | PANCHITO'S-TESORO MEXICAN RESTAURANT & CANTINA, INC. | SAN ANTONIO, TX | SouthTrust Bank, National Association |
| $150,000–350,000 | PANTUSA TOWING & RECOVERY, LLC | SAN ANTONIO, TX | Cross River Bank |
| $150,000–350,000 | PAPER MOON PAINTING, LLC | SAN ANTONIO, TX | Readycap Lending, LLC |
| $150,000–350,000 | PARADIGM HOTEL SA RIVER WALK LP | SAN ANTONIO, TX | American Momentum Bank |
| $1–2 million | PARENT/CHILD INCORPORATED OF SAN ANTONIO & BEXAR COUNTY | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | PARK GLEN REALTY CO | SAN ANTONIO, TX | Sage Capital Bank |
| $350,000–1 million | PARK I-10 MOTORS,INC | SAN ANTONIO, TX | Broadway National Bank |
| $150,000–350,000 | PARKLAND ENTERPRISES LLC | SAN ANTONIO, TX | Vantage Bank Texas |
| $350,000–1 million | PARLEVEL SYSTEMS INC. | SAN ANTONIO, TX | Texas Capital Bank, National Association |
| $150,000–350,000 | PARRILLANDO SA, L.L.C. | SAN ANTONIO, TX | JPMorgan Chase Bank, National Association |
| $1–2 million | PARRISH & COMPANY, INC. | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | PASTEUR MEDICAL ASSOCIATES, P.A. | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | PASTEUR PLAZA SURGERY CENTER, LP | SAN ANTONIO, TX | Broadway National Bank |
| $150,000–350,000 | PATEL GAINES PLLC | SAN ANTONIO, TX | Bank OZK |
| $1–2 million | PATHOLOGY ASSOCIATES OF SAN ANTONIO | SAN ANTONIO, TX | The Bank of San Antonio |
| $1–2 million | PATHOLOGY REFERENCE LABORATORY, LLC | SAN ANTONIO, TX | The Bank of San Antonio |
| $350,000–1 million | PAX FINANCIAL GROUP, LLC | SAN ANTONIO, TX | The Bank of San Antonio |
| $150,000–350,000 | PC MAILING SERVICES, INC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | PCR OPERATING LLC | SAN ANTONIO, TX | Fountainhead SBF LLC |
| $150,000–350,000 | PDRONE LLCDBA DENTS & DINGSOR G LASS C | SAN ANTONIO, TX | JPMorgan Chase Bank, National Association |
| $150,000–350,000 | PEARSON LEGAL, PC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | PECOS FENCE INC | SAN ANTONIO, TX | Wells Fargo Bank, National Association |
| $150,000–350,000 | PEDIATRIC MEDICINE P A | SAN ANTONIO, TX | First-Citizens Bank & Trust Company |
| $150,000–350,000 | PEDIATRIC ORTHOPEDIC ASSOCIATES OF SAN ANTONIO | SAN ANTONIO, TX | Broadway National Bank |
| $1–2 million | PEDIATRIC PRIVATE DUTY NURSING, INC | SAN ANTONIO, TX | Sunflower Bank, National Association |
| $350,000–1 million | PEDIATRIC THERAPY SPECIALISTS, LLC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | PEDIDOCS, P.L.L.C. | SAN ANTONIO, TX | The Bank of San Antonio |
| $150,000–350,000 | PEGGY'S ON THE GREEN, LLC | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | PELLA SOUTH TEXAS LLC. | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | PENNER'S INC. | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | PENNY PAWS ANIMAL CLINIC PLLC | SAN ANTONIO, TX | PlainsCapital Bank |
| $150,000–350,000 | PEREZ & MALIK, PLLC | SAN ANTONIO, TX | JPMorgan Chase Bank, National Association |
| $150,000–350,000 | PERFORMANCE MANAGEMENT, LTD | SAN ANTONIO, TX | International Bank of Commerce |
| $1–2 million | PERFORMANCE OF MT. MORIAH, LP | SAN ANTONIO, TX | The Bank of San Antonio |
| $350,000–1 million | PERFTECH, INC | SAN ANTONIO, TX | Broadway National Bank |
| $350,000–1 million | PERICO'S MEXICAN RESTAURANT, INC. | SAN ANTONIO, TX | SouthTrust Bank, National Association |
| $150,000–350,000 | PERIDOT FINANCIAL PARTNERS LLC | SAN ANTONIO, TX | Vantage Bank Texas |
| $350,000–1 million | PERINATAL & INFERTILITY SPECIALISTS PA | SAN ANTONIO, TX | Frost Bank |
| $2–5 million | PERIPHERAL VASCULAR ASSOCIATES, P.A. | SAN ANTONIO, TX | The Bank of San Antonio |
| $150,000–350,000 | PETE'S TAKO HOUSE, LLC | SAN ANTONIO, TX | BBVA USA |
| $150,000–350,000 | PETERSON BROTHERS, INC. | SAN ANTONIO, TX | Comerica Bank |
| $150,000–350,000 | PETRA SUSANNE LLC | SAN ANTONIO, TX | Broadway National Bank |
| $2–5 million | PEVETO COMPANIES, LTD | SAN ANTONIO, TX | The Bank of San Antonio |