The Old Shire Hall (Welsh: Hen Neuadd y Sir Aberteifi) is a former judicial building in the High Street in Cardigan, Ceredigion, Wales.

[2] The site the justices selected, on the west side of the High Street, had been occupied by the Church of the Holy Trinity.

[3] The shire hall was designed in the neoclassical style, built in rubble masonry with an ashlar stone frontage and was completed in 1764.

It featured a two-storey arch formed by two piers with imposts supporting a series of voussoirs and a raised keystone.

[8] The courtroom ceased to be used for judicial purposes once Cardigan Guildhall was completed in 1860,[2] and the use of the ground floor as a corn exchange declined significantly in the wake of the Great depression of British agriculture in the late 19th century.