| TMN-based Information Model Simulator | Academic & Science |
| The Institute of Management Sciences | Academic & Science |
| Third International Mathematics and Science | Academic & Science |
| Tri Institutional Minority Society | Academic & Science |
| Totally Independent Musician Services | Business |
| Trumpf Information And Messaging System | Business |
| Trade Information Management System | Business |
| Tank Inventory Management System | Business |
| Thermal Infrared Multispectral Scanner | Business |
| Tag Information Management System | Business |
| Transportation Infrastructure Management System | Business |
| Textbook Inventory Management System | Business |
| Trekking Information Management System | Business |
| Turf Irrigation Management Systems | Business |
| Trekkers Information Management System | Business |
| Transport Integrated Management System | Business |
| Thermal Ionization Mass Spectrometry | Chemistry |
| Training Information Monitoring System | Community |
| Teaching Integrated Mathematics and Science | Community |
| The International Molinological Society | Community |
| Teacher Information Management System | Community |
| Teens In Missionary Services | Community |
| Transmission Impairment Measurement System | Computer and Networking |
| Transmission Impairment Measuring Sets | Computing |
| Telecommunications Instructional Modeling System | Computing |
| Telecommunication Instructional Modeling System | Computing |
| Train Integrity Monitoring System | General |
| Toyota Insurance Management Solutions | General |
| Transmission Impairment Measurement Set | General |
| Theoretical Intermarket Margin System | General |
| Train Information Management System | Governmental |
| Treasury Information Management System | Governmental |
| Traveler Information Management System | Governmental |
| Transportation Information Management System | Governmental |
| Transportation Information Mapping System | Governmental |
| Travel Information Management Services | Governmental |
| Transportation Injury Mapping System | Governmental |
| Taunus International Montessori School | International |
| Tesco Internet Management System | Internet |
| Thermal Ion Mass Spectrometer | Medical |
| Tuberculosis Information Management System | Medical |
| Tracker Image Management System | Military and Defence |
| Tecom Integrated Management System | Military and Defence |
| Tfcc Information Management System | Military and Defence |
| Technical Information Management System | Military and Defence |
| Tivoli Internet Management Server | Networking |
| Tuberculosis Information Management System–software for Tb Surveillance and Case Management | Softwares |
| Transmission Impairment Measuring Set | Telecommunication |
| Telephone Information Management System | Telecommunication |
