|Elevation||85 m (279 ft)|
|Time zone||UTC+0 (WET)|
|o Summer (DST)||UTC-1 (IST (WEST))|
|Irish Grid Reference|
Recorded as Tyneaach (1565), Teacneaghe (1543), Theaneac (1541), its current name is a contraction of Teach nEachach, 'Eochu's house'. In medieval Irish sources it is referred to as Teach nEachach, or 'the house of Eochu'. It was originally associated with the townland of Lecarrow, one mile east of the village, now named a Billew Burial Ground, the word Billew derived from Bileadha, plural of bile, denoting a sacred tree.
The element Eachach refers to Dagda, the supreme deity of the pagan Irish. He is cited as the father of the founder of the church, Brandubh of Tynagh. This suggests that Tynagh was originally a cult centre for the festival of Lughnasa, later Christianised by Brandubh, who was cited as Lugh's son, thus betraying its true origins.
Situated between the towns of Loughrea (15 km) and Portumna (13 km), the place is probably best known for the Tynagh mines which opened in the 1960s and were an important source of lead and zinc concentrates at that time. For almost twenty years Irish Base Metals Tynagh Ltd was a major source of employment for east Galway. This all changed in 1981, however, when the mines closed with the loss of 350 jobs.
In 2004, after lying dormant for over twenty years, part of the site was redeveloped for industrial use with Sperrin Galvanisers (Ireland) Ltd opening a steel galvanising plant, and Tynagh Energy Ltd a combined cycle gas turbine (CCGT) power plant, the first in Galway.
Tynagh has very strong hurling links. Between 1920 and 1929 no club in Galway went as long unbeaten in senior hurling. Also during this period, Tynagh had no fewer than six members on the Galway team that won the All-Ireland in 1923, another unrivalled county record.
Paul Keating, the former prime minister of Australia, visited Tynagh in 1993 while tracing his ancestry, and found that he was related to a Thomas Donnellan from Tynagh.