| TDH | High Toxic Dose 
| Others |
| TDH | Table D Hote
| Others |
| TDH | Tactile Direct Hardware
| Others |
| TDH | tal Developed Head
| Others |
| TDH | tal Dynamic Head
| Others |
| TDH | Tall, Dark, and Handsome
| Others |
| TDH | Tally Definitely H
| Others |
| TDH | Team Dan's House
| Others |
| TDH | Telephonics Dynamic Headphone
| Others |
| TDH | Temporary Dental Help
| Others |
| TDH | Tennessee Department of Health
| Others |
| TDH | Terre des Hommes
| Others |
| TDH | Testa Digital Hub
| Others |
| TDH | Texas Department of Health
| Others |
| TDH | The Dark Hand
| Others |
| TDH | Thermostable Direct Hemolysin
| Others |
| TDH | Thord D Hedengren
| Others |
| TDH | Thord Daniel Hedengren
| Others |
| TDH | Time Distance and Heading
| Others |
| TDH | Too Damn Healthy
| Others |
| TDH | Total Dynamic Head
| Others |
| TDH | Totally Different Head
| Others |
| TDH | Trace Data Helper
| Others |
| TDH | Trace Diagnostics Helper
| Others |
| TDH | Transit Bus Diesel with Hydraulic Transmission
| Others |
| TDH | Transmission Differential and Hydraulic
| Others |
| TDH | True Dual Hand
| Others |
| TDH | Turbo Debugger Help
| Others |
| TDH | Turbo Debugger Help file
| Others |
| TDH | Turnpike Design Handbook
| Others |