| Static Image Name: | GlynneathTownHall.jpg |
| Static Image Caption: | Glynneath Town Hall |
| Coordinates: | 51.747°N -3.617°W |
| Country: | Wales |
| Welsh Name: | Glyn-nedd |
| Constituency Welsh Assembly: | Neath |
| Official Name: | Glynneath |
| Population: | 4,278 |
| Population Ref: | (2011)[1] |
| Community Wales: | Glynneath |
| Unitary Wales: | Neath Port Talbot |
| Lieutenancy Wales: | West Glamorgan |
| Constituency Westminster: | Neath |
| Post Town: | NEATH |
| Postcode District: | SA11 |
| Postcode Area: | SA |
| Dial Code: | 01639 |
| Os Grid Reference: | SN885067 |
Glynneath (Welsh: Glyn-nedd "valley of the River Neath"[2]), also spelt Glyn-neath and Glyn Neath, is a town, community and electoral ward lying on the River Neath in the county borough of Neath Port Talbot, Wales. It was formerly in the historic county of Glamorgan. Glynneath ward covers only part of the community, with some 840 electors included in the neighbouring ward of Blaengwrach.
Industrialisation reached Glynneath when coal mining started in 1793, and rapidly expanded when the Neath Canal came to the town in 1775. Many features of the old canal still survive to the present time.[3]
There are waterfalls to the north east at Pontneddfechan near the Brecon Beacons and large parts of the rural area are heavily forested.
Glynneath is home to the ruins of Aberpergwm House. Once owned by Rhys ap Siancyn, Aberpergwm House became the home of the Williams family, Welsh gentry with a strong tradition of using the Welsh language over English. Their descendants include the last of the Welsh household bards Dafydd Nicolas and folksong collector Maria Jane Williams. The Williams' family motto y ddioddefws y orfu (He who suffers, triumphs) was adopted by Glamorgan County Council. The mansion itself was remodelled in 1876 but is now derelict and little of note remains of the building.
St. Cadoc's Church, in the grounds of Aberpergwm House, was built as a chapel in the 17th century, rebuilt in 1808-1809 for the Aberpergwm Williams family and extended in 1836–41. It is a Grade II* listed building.[4]
Rheola House, a Regency house designed c.1812 by the eminent architect John Nash, is also Grade II* listed.[5]
Glynneath Town Hall is a regularly used civic building situated at Heathfield Avenue. It is owned and managed by Glynneath Town Council.
The Grade II* listed Bethania Community Centre on the High Street is an example of an early Calvinistic Methodist chapel with well detailed external frontage in contrasting stone and iron work railings. The interior has good examples of very finely detailed woodwork.
A bronze statue of the singer Max Boyce, who was born in the town, was erected in the High Street, in September 2023, in recognition of Boyce's 80th birthday.[6]
Glynneath used to host one of motor sport's most important challenges, the British round of the World Rally Championship (formerly known as the Lombard RAC rally or Rally GB). Some of the biggest names in motor sport have taken part and have failed to complete the British round.
Glynneath also has an association with downhill mountain biking with the Welsh National Championships being held at Rheola.
Glynneath is home to Glynneath RFC, a rugby union club founded in 1889.
Glynneath also boasts an active group of football clubs and a well attended tennis club. Until recently, Glynneath Bowls Club, in particular the Ladies' Bowls Club was an active group.
Glynneath Leisure Centre, maintained through Celtic Leisure is situated just off of Chain Road.
Glynneath is twinned with:
Pont-Évêque, France, since 1993The town twinning supports football matches between the two towns, and a visit by Glynneath Male Voice Choir.