DHT may refer to:
Dihydrotestosterone, a potent endogenous androgenic hormone, derived from testosterone.
Directly heated triode, a type of thermionic valve now used primarily in audio amplifiers.
Discrete Hartley transform, a Fourier-related transform of discrete, periodic data similar to the discrete Fourier transform.
Distributed hash table, a type of distributed system that provides hash table–like functionality.
Other.
DHT (band), a Belgian dance duo
Dr Hadwen Trust, a UK charity promoting animal experiments alternatives