| INTERNATIONAL IFC LINE, INC. | — | 52525624 | 1981-10-02 | Dissolved | |
| INTERNATIONAL MEMORY PRODUCTS OF ILLINOIS, INC | — | 52529727 | 1981-10-07 | Dissolved | |
| INTERNATIONAL MERCHANDISING & PRINTING CORPORATION | — | 52338778 | 1981-03-26 | Revoked | |
| INTERNATIONAL MINICOMPUTER ACCESSORIES CORPORATION | — | 52285887 | 1981-01-29 | Withdrawn | |
| INTERNATIONAL NUCLEAR & ENERGY ASSOCIATION, INC. | — | 52360781 | 1981-04-16 | Dissolved | |
| INTERNATIONAL PORCELAIN CORP. | — | 52367298 | 1981-04-22 | Dissolved | |
| INTERNATIONAL PROTEIN SERVICES, INC. | — | 52457874 | 1981-07-27 | Dissolved | |
| INTERNATIONAL RAG BALL, SALES, INC. | — | 52481988 | 1981-08-18 | Dissolved | |
| INTERNATIONAL REAL ESTATE SCHOOL, INC. | — | 52299721 | 1981-02-06 | Dissolved | |
| INTERNATIONAL RELIANCE CORPORATION | — | 52298326 | 1981-02-13 | Revoked | |
| INTERNATIONAL SATELLITE SYSTEMS, INC. | — | 52539005 | 1981-10-16 | Dissolved | |
| INTERNATIONAL SOCIAL ORGANIZACION, INC. | — | 52454786 | 1981-07-20 | Dissolved | |
| INTERNATIONAL TANDEM USERS' GROUP, INC. | — | 52355141 | 1981-04-09 | Merged | |
| INTERNATIONAL THOMSON MAGAZINES, INC. | — | 52342554 | 1981-04-01 | Revoked | |
| INTERNATIONAL TOURS AND TRAVEL, INC. | — | 52481783 | 1981-08-18 | Dissolved | |
| INTERNATIONAL TRADING COMPANY, LTD. | — | 52582091 | 1981-11-25 | Dissolved | |
| INTERNATIONAL TRAVEL CARD, INC. | — | 52525977 | 1981-10-05 | Merged | |
| INTERNATIONAL VILLA VACATIONS, INC. | — | 52595045 | 1981-12-17 | Revoked | |
| INTERNATIONAL VISION CARE SERVICE, LTD. | — | 52342074 | 1981-03-30 | Dissolved | |
| INTERPOINT CORPORATION | — | 52448417 | 1981-07-10 | Dissolved | |
| INTERSHOP REAL ESTATE SERVICES, INC. | — | 52311896 | 1981-02-27 | Withdrawn | |
| INTERSTATE CAPITAL LIMITED | — | 52278287 | 1981-01-23 | Dissolved | |
| INTERSTATE COMMUNICATIONS, INCORPORATED | — | 52340837 | 1981-03-25 | Dissolved | |
| INTERSTATE EXTRADITIONS, INCORPORATED | — | 52551382 | 1981-10-29 | Dissolved | |
| INTERSTATE OPTICAL LABORATORIES, INC. | — | 52363942 | 1981-04-20 | Active | |
| INTERSTATE PAINTING, INC. | — | 52410525 | 1981-06-03 | Dissolved | |
| INTERSTATE PETROLEUM, INC. | — | 52268559 | 1981-01-07 | Dissolved | |
| INTERSTATE UNITED CORPORATION | — | 52461006 | 1981-07-31 | Merged | |
| INTERTECH AUTOMATION COMPANY | — | 52508134 | 1981-09-16 | Merged | |
| INTIMATE BOUTIQUE 2, LTD. | — | 52472741 | 1981-08-04 | Dissolved | |
| INTREPID ART, INC. | — | 52429536 | 1981-06-26 | Dissolved | |
| INTUMESCENT TECHNOLOGY, INCORPORATED | — | 52473942 | 1981-08-11 | Dissolved | |
| INVERELLE, INC. | — | 52488346 | 1981-08-24 | Dissolved | |
| INVERRARY WEST CONDOMINIUM ASSOCIATION | — | 52489717 | 1981-08-24 | Active | |
| INVERSE SQUARE SYSTEMS, INC. | — | 52330858 | 1981-03-18 | Dissolved | |
| INVESTIGATIVE CONSULTANTS, INC | — | 52529395 | 1981-10-09 | Revoked | |
| INVESTMENT BUILDERS INTERNATIONAL, INC. | — | 52280389 | 1981-01-23 | Dissolved | |
| INVESTMENT ENTERPRISES, INC. | — | 52411548 | 1981-06-09 | Dissolved | |
| INVESTMENT INFORMATION SERVICES, INC. | — | 52503574 | 1981-09-10 | Revoked | |
| INVESTMENT PROCUREMENT & MANAGEMENT, INC. | — | 52503418 | 1981-09-08 | Dissolved | |
| INVESTMENT RECOVERY SERVICES, INC. | — | 52424135 | 1981-06-24 | Revoked | |
| INVESTMENT RESOURCES CORPORATION | — | 52570131 | 1981-11-17 | Active | |
| INVESTMENT TROTTING, LTD. | — | 52472865 | 1981-08-07 | Dissolved | |
| INVESTORS' EQUITIES CORPORATION | — | 52534801 | 1981-10-13 | Active | |
| IOANIAN SUPERMARKET, INC. | — | 52316057 | 1981-03-04 | Dissolved | |
| IOANNA, INC. | — | 52441684 | 1981-07-01 | Active | |
| IOC EXECUTIVE BUSINESS CENTER, INC. | — | 52558816 | 1981-11-02 | Dissolved | |
| IOWA COMMODITIES, LTD. | — | 52588847 | 1981-12-14 | Revoked | |
| IOWA-ILLINOIS EXPRESS, LTD. | — | 52363101 | 1981-04-21 | Revoked | |
| IR RESOURCE PLANNING CORP. | — | 52589029 | 1981-12-15 | Revoked | |