THT

THT may refer to:


 * Tetrahydrothiophene
 * Through-hole technology, category of electronic components
 * The Hardball Times
 * The Terrence Higgins Trust, British sexual health charity
 * The History Teacher, a quarterly academic journal
 * Thorntonhall railway station, Scotland, code
 * Tamchakett Airport, Mauritania, IATA code
 * Talen Horton-Tucker, NBA basketball player