| Abbreviation | Definition |
|---|---|
| LTHI | Liberty Telecom Holdings Inc |
| LTHI | Liberty Telecoms Holdings Inc |
| LTI | Laboratory Testing Inc |
| LTI | Laser Technologies Incorporated |
| LTI | Leonardo Technologies Inc |
| LTI | Liberating Technologies Inc |
| LTI | Living Technologies Inc |
| LTI | Living Technologies, Inc. |
| LTI | LOGICON Technologies, Inc. |
| LTI | Longboard Traditions International |
| LTI | Trucking Inc |
| LTM | Laird Telemedia |
| LTM | Lights for Television and Movie Industry |
| LTO | Lansing Theatre Organ, Inc. |
| LTS | Literacy Training Service |
| LTT | Liberty Tree Tavern |
| LTT | Libyan Telecommunications and Technology (now part of General Post and Telecommunication Company) |
| LTU | LuftTransport-Union |
| LTV | Ling Temco Vought |
| LTW | Lanphear Tool Works |