| OKLAHOMA COALITION AGAINST DOMESTIC VIOLENCE AND SEXUAL ASSAULT, INC. | 4300592312 | 1997-10-22 | Expired | — |
| OKLAHOMA COIN EXCHANGE, INC. | 1900579260 | 1997-01-29 | Active | — |
| OKLAHOMA COMPREHENSIVE PSYCHOLOGICAL SERVICES, INC. | 1900582766 | 1997-04-07 | Inactive | — |
| OKLAHOMA CONCERNED CITIZEN ASSOCIATION, INC. | 2100582994 | 1997-04-10 | Active | — |
| OKLAHOMA CONFERENCE OF MAYORS, INC. | 2100583035 | 1997-04-11 | Active | — |
| OKLAHOMA CONSUMERS AGAINST LAWSUIT ABUSE, INC. | 4300591837 | 1997-10-09 | Inactive | — |
| OKLAHOMA CONSUMERS AGAINST LAWSUIT ABUSE, INC. | 2100590210 | 1997-09-10 | Active | — |
| OKLAHOMA CORRECTIONAL DEVELOPMENT CORPORATION | 2300585358 | 1997-05-29 | Inactive | — |
| OKLAHOMA COUNSELING AND REHABILITATION SERVICES INC. | 1900585054 | 1997-05-22 | Inactive | — |
| OKLAHOMA COUNTERTOP SUPPLY, INC. | 1900583420 | 1997-04-21 | Dissolved | — |
| OKLAHOMA COUNTY BAR ASSOCIATION | 2100578176 | 1997-01-08 | Active | — |
| OKLAHOMA COUNTY RETIRED EDUCATORS ASSOCIATION (OCREA) | 2100584885 | 1997-05-19 | Active | — |
| OKLAHOMA CRISIS RESPONSE TEAM, INC. | 2100592355 | 1997-10-22 | Active | — |
| OKLAHOMA DATA TECHNOLOGY FOUNDATION | 2100585204 | 1997-05-27 | Active | — |
| OKLAHOMA DERMATOLOGICAL LASER SURGERY CENTER, L.L.C. | 3500582046 | 1997-03-24 | Dissolved | — |
| OKLAHOMA DIAGNOSTIC IMAGING LIMITED PARTNERSHIP | 3300581605 | 1997-03-14 | Canceled | — |
| OKLAHOMA DIRECTIONAL BORING SERVICE, INC. | 1900585623 | 1997-06-02 | Inactive | — |
| OKLAHOMA DRUG ABUSE GUIDE & SERVICE DIRECTORY, AWARE, ASSOCIATION | 2100590722 | 1997-09-19 | Active | — |
| OKLAHOMA DRUG COURT ASSOCIATION | 2100591701 | 1997-10-09 | Active | — |
| OKLAHOMA EAR, NOSE AND THROAT I.P.A., INC. | 1900583220 | 1997-04-16 | Inactive | — |
| OKLAHOMA EDUCATIONAL TELEVISION AUTHORITY FOUNDATION, INC. | 4300594439 | 1997-02-27 | Expired | — |
| OKLAHOMA EMBROIDERY SUPPLY & DESIGN, INC. | 2300594137 | 1997-11-26 | Withdrawn | — |
| OKLAHOMA EMPLOYERS SOLUTION, INC. | 1900588965 | 1997-08-13 | Inactive | — |
| OKLAHOMA ENVIRONMENTAL CAMPAIGN FUND | 2100582281 | 1997-03-27 | Active | — |
| OKLAHOMA FILM AND ENTERTAINMENT FOUNDATION, INC. | 4300599386 | 1997-06-18 | Inactive | — |
| OKLAHOMA FOLKLIFE COUNCIL | 4300599389 | 1997-02-26 | Inactive | — |
| OKLAHOMA FOUNDATION FOR EXCELLENCE | 2100589216 | 1997-08-19 | Active | — |
| OKLAHOMA FOUNDATION FOR THE DISABLED INC. | 4300599390 | 1997-06-04 | Expired | — |
| OKLAHOMA FREIGHT EXPRESS. INC. | 1900580641 | 1997-02-26 | Inactive | — |
| OKLAHOMA GET CONNECTED, INC. | 1900580140 | 1997-02-14 | Inactive | — |
| OKLAHOMA GLOBAL RESOURCES NETWORK, INC. | 2100594529 | 1997-12-04 | Active | — |
| OKLAHOMA GOLD GYMNASTICS, INC. | 1900592763 | 1997-10-31 | Active | — |
| OKLAHOMA GOLD REALTY, L.L.C. | 3500589583 | 1997-08-27 | Canceled | — |
| OKLAHOMA GOODWILL INDUSTRIES, INC. | 4300593593 | 1997-05-13 | Expired | — |
| OKLAHOMA HALFWAY HOUSE, INC. | 4300599392 | 1997-05-15 | Active | OKLAHOMA CITY |
| OKLAHOMA HOME EDUCATION ACTIVITIES ASSOCIATION | 2100593529 | 1997-11-17 | Active | — |
| OKLAHOMA HOME ENERGY RESOURCE ORGANIZATION, INC. | 1900594415 | 1997-12-03 | Inactive | — |
| OKLAHOMA HOME ENVIRONMENT CENTER, INC. | 1900581921 | 1997-03-20 | Inactive | — |
| OKLAHOMA HOME HEALTH, INC. | 1900580860 | 1997-03-03 | Inactive | — |
| OKLAHOMA HORSE INDUSTRY COUNCIL, INC. | 2100588853 | 1997-08-11 | Active | — |
| OKLAHOMA HOSPITALITY CLUB | 4300599399 | 1997-08-10 | Active | OKLAHOMA CITY |
| OKLAHOMA HOT ROD ASSOCIATION, INC. | 2100581019 | 1997-03-05 | Active | — |
| OKLAHOMA HOUSING DEVELOPMENT AUTHORITY | 12201043 | 1997-10-22 | Active | — |
| OKLAHOMA INVESTMENT GROUP, INC. | 1900593820 | 1997-08-14 | Inactive | — |
| OKLAHOMA INVESTMENT PARTNERS, L.L.C. | 3500589081 | 1997-08-15 | Canceled | — |
| OKLAHOMA ISRAEL EXCHANGE, INC. | 2100585489 | 1997-06-02 | Active | — |
| OKLAHOMA JITTERBUGS FAST PITCH CLUB | 2100590326 | 1997-09-12 | Active | — |
| OKLAHOMA LEGEND CARS, L.L.C. | 3500587650 | 1997-07-15 | Canceled | — |
| OKLAHOMA LESBIAN AND GAY LAW ASSOCIATION | 2100583183 | 1997-04-15 | Active | — |
| OKLAHOMA LIGHTING SALES, L.L.C. | 3500577790 | 1997-01-02 | Canceled | — |