ATH

Ath is a city in Belgium.

The acronym or initials ATH may also refer to:


 * Athens International Airport, Greece, IATA code
 * Atherstone railway station, UK, National Rail code
 * Around the Horn, an ESPN Television Show
 * Absolute threshold of hearing
 * ATH (interbank network), Puerto Rico and the Caribbean
 * A Toda Hora, a Colombian interbank network
 * The Hayes command set for modems "hang up" command
 * University of Bielsko-Biała (Polish: Akademia Techniczno-Humanistyczna w Bielsku-Białej or "ATH" in its logo and web site)
 * Athabaskan languages (ISO 639-2 and ISO 639-5 codes)