THB

THB may refer to:


 * Tanah Abang station
 * Tetrahydrobiopterin, a chemical
 * Tetrahydrocorticosterone, a hormone
 * Thai baht, the currency of Thailand (ISO 4217 code: THB)
 * THB (comics), and the character Tri-Hydro Bi-Oxygenate
 * Three Horses Beer of Madagascar
 * Toronto, Hamilton and Buffalo Railway reporting mark
 * IATA code of Thaba Tseka Airport, an airport serving Thaba-Tseka in Lesotho
 * ThB, Bachelor of Theology degree