| TCI | Tactical Command Industries 
| Others |
| TCI | Tag Control Information
| Others |
| TCI | tal Channel Interference
| Others |
| TCI | Talent Consultants International
| Others |
| TCI | Tamástslikt Cultural Institute
| Others |
| TCI | Target Controlled Infusion
| Others |
| TCI | Target-Controlled Infusion
| Others |
| TCI | Tata Cornell Institute
| Others |
| TCI | Taycheedah Correctional Institution
| Others |
| TCI | Teachers Curriculum Institute
| Others |
| TCI | Technical Critical Item
| Others |
| TCI | Technology Career Institute
| Others |
| TCI | Technology Collaboration Innovation
| Others |
| TCI | Technology College Initiative
| Others |
| TCI | Technology Consulting Inc
| Others |
| TCI | Techtrol Cyclonetics Inc
| Others |
| TCI | Tele Communications Inc
| Others |
| TCI | Telecommunication Company of Iran
| Others |
| TCI | Telecommunications Inc.
| Others |
| TCI | Telephone Collectors International
| Others |
| TCI | Temperament and Character Inventory
| Others |
| TCI | Tenerife, Canary Islands
| Others |
| TCI | Tennessee Corrections Institute
| Others |
| TCI | Terios Club Italia
| Others |
| TCI | Terrano Club Indonesia
| Others |
| TCI | Test Cell Input
| Others |
| TCI | Test Configuration Infrastructure
| Others |
| TCI | Texas Correctional Industries
| Others |
| TCI | The Challenge Initiative
| Others |
| TCI | The Commonwealth Institute
| Others |
| TCI | Theme Centered Interaction
| Others |
| TCI | Therapeutic Crisis Intervention
| Others |
| TCI | Thermal Comfort Inventory
| Others |
| TCI | Third Country Initiative
| Others |
| TCI | Third Culture Individual
| Others |
| TCI | Tire Centers Inc.
| Others |
| TCI | Tisch Cancer Institute
| Others |
| TCI | Titlecode Common Information
| Others |
| TCI | To Come In
| Others |
| TCI | to come in (!)
| Others |
| TCI | to come in (for appt.)
| Others |
| TCI | To Come In (Personally)
| Others |
| TCI | Topolino Club Innerschweiz
| Others |
| TCI | Total Capital Investment
| Others |
| TCI | Total Cerebral Ischaemia
| Others |
| TCI | Total Cost Indicators
| Others |
| TCI | Total Cost Involved
| Others |
| TCI | Total Customer Interactions
| Others |
| TCI | Touring Club Italiano
| Others |
| TCI | Toyo Tire Canada Inc.
| Others |
| TCI | Toyota Canada Inc
| Others |
| TCI | Toyota Canada Inc.
| Others |
| TCI | Toyota Club Italia
| Others |
| TCI | Toyota Corona Indonesia
| Others |
| TCI | Track Condition Index
| Others |
| TCI | Trade Competitive Index
| Others |
| TCI | Trade Credit Insurance
| Others |
| TCI | Trading Cards Inc
| Others |
| TCI | Transaction Component Interface
| Others |
| TCI | Transceiver Control Interface
| Others |
| TCI | Transient Cerebral Ischaemia
| Others |
| TCI | Transient Cerebral Ischemia
| Others |
| TCI | Transient Cognitive Impairment
| Others |
| TCI | Transistor Controled Ignition
| Others |
| TCI | Transistor Controlled Ignition
| Others |
| TCI | Transistorized Coil Ignition
| Others |
| TCI | Transport Corporation of India
| Others |
| TCI | Transport Cost Index
| Others |
| TCI | Transportation and Climate Initiative
| Others |
| TCI | Transportation Capital Improvements
| Others |
| TCI | Transportation Climate Initiative
| Others |
| TCI | Transportation Consultants Inc
| Others |
| TCI | Trash Can Industries
| Others |
| TCI | Trauma Care International
| Others |
| TCI | Tree Care Industry
| Others |
| TCI | Trinity Church International
| Others |
| TCI | Troop Carrier Infantry
| Others |
| TCI | Tropical Cyclone Intensity
| Others |
| TCI | True Client Involvement
| Others |
| TCI | Truly Creative Ideas
| Others |
| TCI | Trust Competitiveness And Integrity
| Others |
| TCI | Trust, Commitment, Innovation
| Others |
| TCI | Trusted Cloud Initiative
| Others |
| TCI | Trustworthy Computer Initiative
| Others |
| TCI | Try Calling In
| Others |
| TCI | Tsukuba Center Inc
| Others |
| TCI | Tuned Capacitance and Inductance
| Others |
| TCI | Tungsten Carbide Insert
| Others |
| TCI | Turbine Controls Inc
| Others |
| TCI | Turbo Charged Compression Ignition
| Others |
| TCI | Turbo Charged Intercooler
| Others |
| TCI | Turks Caicos Islands
| Others |
| TCI | Twizted Comix Inc
| Others |