John's Hall (Irish: Halla Eoin), also known as Birr Town Hall (Irish: Halla an Bhaile Biorra)[1] is a municipal building in John's Mall, Birr, County Offaly, Ireland.

[2] The building was designed by Bernard Mullins in the neoclassical style and was inspired by the Temple on the Ilissus at Athens.

It featured a short flight of steps leading up to a full-height portico formed by four fluted Ionic order columns supporting an entablature and a pediment.

[6][7][8] A statue of the astronomer, William Parsons, 3rd Earl of Rosse, who built several giant telescopes, was designed and sculpted by John Henry Foley and unveiled in front of the building by the Countess of Rosse on 21 March 1876.

[13] John's Hall, which has always remained in the ownership of the Birr Castle Estate, was leased to the Irish Heritage School, established in 2010, as their lecturing and exhibition venue, in 2019.