Gah may refer to: Gah, Iran, a village in Razavi Khorasan Province Gah, Pakistan, a village in Chakwal District Gāh, a period of time in Zoroastrianism the ISO 639-3 code for the Alekano language, also known as Gahuku, spoken in the Eastern Highlands Province of Papua New Guinea Gayndah Airport, IATA code Guanine deaminase, an enzyme