| Rank | Abbreviation | Meaning |
|---|
| ***** | TLCS | Total Level Control System
| |
| **** | TLCS | Trades and Labour Councils
| |
| **** | TLCS | Tourist and Leisure Companion Sticker
| |
| *** | TLCS | Twin Lakes Christian School
| |
| *** | TLCS | Tender Loving Care Health Care Services, Inc.
| |
| *** | TLCS | Teaching and Learning Centers
| |
| *** | TLCS | The Love Connection Song
| |
| *** | TLCS | The London Cantorial Singers
| |
| *** | TLCS | Trinity Lutheran Church and School
| |
| *** | TLCS | The Living Color Song
| |
| *** | TLCS | Total Life Cycle Support
| |
| *** | TLCS | The Legacy of Contaminated Sedim
| |
| ** | TLCS | Two-Loop Closing System
| |
| ** | TLCS | Taiwan Liquid Crystal Society
| |
| ** | TLCS | Taurolithocholate-3-sulfate
| |
| ** | TLCS | Torpedo Launch Canister System
| |
| ** | TLCS | Teaching, Leadership and Curriculum Studies
| |
| ** | TLCS | Transitional Local Councils
| |
| ** | TLCS | Transitional Living and Community Support
| |
| ** | TLCS | Through Life Customer Support
| |
| ** | TLCS | Toyota Land Cruiser Series
| |
| ** | TLCS | Television Licensable Content Service
| |
| * | TLCS | The Leadership Culture Survey
| |
| * | TLCS | The Leading Caller Software
| |
| * | TLCS | The Learning Center School
| |