Look up thm in Wiktionary, the free dictionary.
THM, Thm, thm or ThM may refer to:
- Turbo-Hydramatic, GM vehicle transmission
- Ton of heavy metal in a nuclear power plant
- Ton of hot metal in the steel industry
- Trihalomethanes in chemistry
- Therm, a unit of heat energy
- Technische Hochschule Mittelhessen—University of Applied Sciences
- Master of Theology postnominal, ThM