| Acronym | Definition |
|---|
| TLH | Terminal Logon Handler |
| TLH | Tax Loss Harvesting |
| TLH | The Learning House (Louisville, KY) |
| TLH | Total Laparoscopic Hysterectomy |
| TLH | The Lutheran Hymnal |
| TLH | Tallahassee, FL, USA (Airport Code) |
| TLH | Trans-Labrador Highway (Canada) |
| TLH | Trader's Little Helper (software) |
| TLH | Thread-Local Heap |
| TLH | Total Listening Hours (Internet Radio) |
| TLH | The Language House (various locations) |
| TLH | Top-Level Hierarchy (Microsoft Exchange Server) |
| TLH | Type Library Header (Microsoft Visual C++ compiler and programming language) |
| TLH | The Ley Hunter (journal) |
| TLH | Tréfileries et Laminoirs du Havre (French energy supplier) |
| TLH | Top-Level Hazards |
| TLH | Thomas Lincoln Handy school (Bay City, Michigan) |
| TLH | Tanunda Lutheran Homes (South Australia) |