PTH

PTH may refer to:

Biology and Medicine

 * Parathyroid hormone
 * phenylthiohydantoin, an amino acid derivative formed by the Edman degradation

Computing

 * GNU Portable Threads in computing
 * Pass the hash attack in computing

Languages

 * Pataxó language, by ISO 639 code
 * Standard Chinese, also known as putonghua and abbreviated PTH

Places

 * Port Huron (Amtrak station), Michigan, US, station code
 * Perth railway station, Scotland, station code
 * Provincial Trunk Highway in list of Manitoba provincial highways
 * Port Heiden Airport, by IATA code

Other

 * Plated through-hole in PCB through-hole technology
 * Polskie Towarzystwo Historyczne, the Polish Historical Society