| INSURANCE INCORPORATED | Finance and insurance | 784377-0142 | 1981-10-08 | Inactive | Salt Lake City |
| INTEGRATED BUSINESS SYSTEMS, INC. | — | 767061-0142 | 1981-04-03 | Inactive | Salt Lake City |
| INTEGRATED CAPITAL SERVICES, INC. | Real estate and leasing | 775038-0142 | 1981-06-25 | Inactive | Sandy |
| INTEGRATED PRODUCTS CORPORATION | — | 780410-0142 | 1981-08-28 | Inactive | Ogden |
| INTEGRATED SYSTEMS ENGINEERING INTERNATIONAL | — | 775995-0142 | 1981-07-06 | Inactive | Logan |
| INTELLIGENCE STUDIES FOUNDATION, INCORPORATED | — | 766490-0143 | 1981-03-30 | Expired | Ogden |
| INTENSIFY | — | 759320-0140 | 1981-01-05 | Inactive | WEST VALLEY UTAH |
| INTER-DATA CORPORATION | — | 783266-0142 | 1981-09-29 | Inactive | Salt Lake City |
| INTERCON, INCORPORATED | Manufacturing | 788458-0142 | 1981-11-27 | Active | SALT LAKE CITY |
| INTERCONTINENTAL PRODUCTS CORPORATION | Transportation and warehousing | 775213-0142 | 1981-06-26 | Inactive | Salt Lake City |
| INTERCONTINENTAL STRATEGIC MINERALS, INC. | Mining, oil and gas | 776827-0142 | 1981-07-16 | Inactive | Salt Lake City |
| INTERFACE INSTALLATIONS, INC. | — | 759862-0143 | 1981-01-12 | Inactive | |
| INTERFLIGHT, INC. | Transportation and warehousing | 791345-0142 | 1981-12-31 | Inactive | Provo |
| INTERMAC CO-OPERATIVE ASSOCIATION, INC. | — | 767300-0140 | 1981-04-06 | Inactive | Salt Lake City |
| INTERMARK DEVELOPMENT CORPORATION | Other services | 787891-0142 | 1981-11-19 | Inactive | Provo |
| INTERMARKET VENTURES, INC. | — | 779934-0142 | 1981-08-24 | Inactive | NA |
| INTERMOUNTAIN BUILDING MANAGEMENT, INC. | — | 765385-0142 | 1981-03-19 | Inactive | Salt Lake City |
| INTERMOUNTAIN CARBONICS, INC. | — | 761383-0142 | 1981-01-30 | Inactive | Salt Lake City |
| INTERMOUNTAIN CARDIOTHORACIC ASSOCIATES, PC | Health care and social assistance | 768376-0144 | 1981-04-17 | Inactive | Murray |
| INTERMOUNTAIN CREATIVE FAMILY EXTENSION SERVICES | Health care and social assistance | 789180-0140 | 1981-12-04 | Inactive | Salt Lake City |
| INTERMOUNTAIN CREDIT CORPORATION | Finance and insurance | 775843-0142 | 1981-07-02 | Inactive | WEST VALLEY UTAH |
| INTERMOUNTAIN E.D.P. SOCIETY OF TRAINERS | — | 762970-0140 | 1981-02-19 | Inactive | WEST VALLEY UTAH |
| INTERMOUNTAIN EXPLOSIVE SUPPLY, INC. | — | 771039-0142 | 1981-05-15 | Inactive | Salt Lake City |
| INTERMOUNTAIN FIBERGLASS, INCORPORATED | — | 766665-0142 | 1981-04-01 | Inactive | Salt Lake City |
| INTERMOUNTAIN FIRE PROTECTION, INC. | Administrative and waste services | 783775-0142 | 1981-10-02 | Inactive | BOUNTIFUL |
| INTERMOUNTAIN FLEETWOOD, INC. | Retail trade | 764839-0142 | 1981-03-13 | Inactive | Salt Lake City |
| INTERMOUNTAIN GOLF COURSE MANAGEMENT GROUP | Arts and entertainment | 790781-0142 | 1981-12-24 | Inactive | STANSBURY PARK |
| INTERMOUNTAIN GROWTH INVESTMENTS, LTD. | Finance and insurance | 2109708-0180 | 1981-07-16 | Inactive | SLC |
| INTERMOUNTAIN HELICOPTERS | — | 759561-0142 | 1981-01-08 | Inactive | Salt Lake City |
| INTERMOUNTAIN HYDRAULICS & AUTOMATION, INC. | — | 778904-0142 | 1981-08-10 | Expired | SMITHFIELD |
| INTERMOUNTAIN INTER-TRIBAL SCHOOL BOARD, INC. | Educational services | 779736-0140 | 1981-08-21 | Inactive | Brigham City |
| INTERMOUNTAIN LAUNDRIES, INC. | Other services | 783870-0142 | 1981-10-14 | Inactive | Salt Lake City |
| INTERMOUNTAIN LODGING AND RESERVATION CENTER, INC. | — | 787940-0142 | 1981-11-20 | Inactive | PARK CITY |
| INTERMOUNTAIN M.X. CORPORATION | — | 774905-0142 | 1981-06-24 | Inactive | Salt Lake City |
| INTERMOUNTAIN PENNY STOCK COMPOSITION, THE | Information | 780416-0142 | 1981-08-28 | Inactive | Salt Lake City |
| INTERMOUNTAIN PLASTIC RESEARCH & DEVELOPMENT INCORPORAT | Transportation and warehousing | 768644-0142 | 1981-04-22 | Inactive | DRAPER UTAH |
| INTERMOUNTAIN PROPANE CONVERSIONS, INC. | — | 767059-0142 | 1981-04-03 | Inactive | Ogden |
| INTERMOUNTAIN SATELLITE COMMUNICATIONS CORPORATION | Information | 769927-0142 | 1981-05-05 | Inactive | WEST JORDAN |
| INTERMOUNTAIN SOFTWARE DEVELOPMENT AND CONSULTING, INC. | — | 764240-0142 | 1981-03-06 | Inactive | Salt Lake City |
| INTERMOUNTAIN SPECIFICATION SALES COMPANY | — | 775655-0142 | 1981-07-01 | Inactive | SLC |
| INTERMOUNTAIN SPRING WAREHOUSE, INC. | — | 764860-0142 | 1981-03-13 | Inactive | Salt Lake City |
| INTERMOUNTAIN THOROUGHBRED ASSOCIATION | — | 762734-0140 | 1981-02-17 | Inactive | |
| INTERMOUNTAIN WATER ALLIANCE | Utilities | 774753-0140 | 1981-06-22 | Inactive | Salt Lake City |
| INTERNATIONAL ACCEPTANCE CORPORATION | — | 763561-0142 | 1981-02-27 | Inactive | Salt Lake City |
| INTERNATIONAL ACCOUNTING SERVICES, INC. | Professional services | 788277-0142 | 1981-11-24 | Inactive | Salt Lake City |
| INTERNATIONAL BOATEL COMPANIES, INC. | — | 785297-0143 | 1981-10-20 | Expired | Salt Lake City |
| INTERNATIONAL BROTHERHOOD OF POLICE OFFICERS (IBPO) LOCAL 47 | — | 789756-0140 | 1981-12-10 | Inactive | Salt Lake City |
| INTERNATIONAL COMMERCIAL ENTERPRISES, INC. | — | 772709-0142 | 1981-06-02 | Inactive | Salt Lake City |
| INTERNATIONAL DEFENSE PRODUCTS, INC. | Manufacturing | 766672-0142 | 1981-04-01 | Inactive | Salt Lake City |
| INTERNATIONAL DYNERGY, INC. | — | 768805-0142 | 1981-04-23 | Inactive | Salt Lake City |