Sth

STH or sth can refer to:


 * Abbreviation of something (concept)
 * STH (gene), a human gene
 * S.T.H., or Straight To Hell, a gay pornography zine
 * Saint Helena, Ascension and Tristan da Cunha, UNDP country code
 * Somatotropin hormone or growth hormone
 * Secretary for Transport and Housing, of the Government of Hong Kong
 * Soil-transmitted helminth, a type of parasitic worm
 * Soil-transmitted helminthiasis, caused by soil-transmitted helminths
 * Sonic the Hedgehog