St David's Hall (Welsh: Neuadd Dewi Sant) is a performing arts and conference venue in the heart of Cardiff, Wales.

St David's Hall is the National Concert Hall and Conference Centre of Wales. It hosts the annual Welsh Proms^[6] and the biennial BBC Cardiff Singer of the World competition.^[7] As well as classical music it also plays host to jazz, soul, pop, rock, dance, children's, rhythm and blues, musicals and other forms of world music, as well as light entertainment artists. The foyers in the centre are open and have regular free performances from music groups. The foyers, balconies and bar areas are also used to host art exhibitions.

Major events held at the Hall include the BBC Cardiff Singer of the World competition held every two years and the Welsh Proms held annually. Prizes for the Welsh Artist of the Year are awarded at the venue every June, followed by an exhibition of the winners and shortlisted works.^[15]

St David's Hall is continually developing its variety of shows. It re-branded the L3 Lounge venue, which has a partly seated capacity of 350 and is mainly used for daytime concerts, the Roots Unearthed folk series and Blas* – A Taste of the Fresh Welsh Sound.^[16]

In November 2022 talks were taking place between Cardiff Council and Academy Music Group (AMG) with view to AMG taking over the running of the venue. There was also a maintenance backlog which the council hoped would be taken on by the new operator.^[17]

The hall now has Interim Protection by Cadw as a Grade II listed building under the Planning (Listed Buildings and Conservation Areas) Act 1990 and amended by the Historic Environment (Wales) Act 2016.^[18] As a consequence it's an offence to damage the hall or alter it in any way without prior consent.^[18]

In September 2023 the hall was closed due to the discovery of Reinforced autoclaved aerated concrete in its roof.^[19] The closure is planned to last 18 months to allow for the replacement of the roof.^[19]

The concert organ of St. David's Hall was completed by Peter Collins in 1982,^[20][21] at a cost of £168,000.^[22] This would be the largest organ he ever built.^[23] The wooden case was designed by Ralph Downes.^[24] Due to problems with the action, J. W. Walker & Sons replaced the action and console,^[20] a great embarrassment at the time considering the cost of the organ.^[22] The organ has 3 manuals, and German-style continental registrations.^[20]

The main auditorium of St. David's Hall is regularly host to organ events, including lunchtime concerts.^[25] Many organists travel to try out the organ, and others come to give recitals,^[26] notably Olivier Latry,^[24] Anne Marsden Thomas,^[27] Ghislaine Reece-Trapp,^[27] and Margaret Phillips.^[27] St. David's Hall has also hosted concerts for major organ events such as the 2019 RCO OrganFest.^[28][29][30]