TPH may refer to:
- Walther TPH, a semi-automatic pistol made by the German arms manufacturer Walther.
- Trains Per Hour (UK), an abbreviation used to indicate train service/schedules for a particular railway station.
- Tryptophan hydroxylase, an enzyme.
- Tonnes Per Hour, an abbreviation used to specify the capacity of industrial machinery such as boiler, conveyor belt and vibrating feeder.
- Total Petroleum Hydrocarbon, an expression of chemical content.