The Church of Holy Cross is the grade I listed parish church of Daventry in Northamptonshire, England. Holy Cross is the only 18th-century town church in Northamptonshire.
It was built between 1752 and 1758 by William Hiorne and his brother David, who were architects and builders based in Warwick. It was built at a cost of £3,468 raised by public subscription, to replace the previous church at the site which had decayed to the point where it was no longer safe. The design of the church was said to have been modelled on St Giles in the Fields in London. It is constructed of the local ironstone. The western elevation is broad with large pilasters at the angles and the angles of the centre bay. The entrance porch was added in 1951. The tower rises from the centre bay and is square ending with an obelisk spire rising above. Inside, the church has three wooden galleried aisles, to the north, south and west elevations. The pulpit is decorated with marquetry and fretwork and has a staircase with twisted balusters. Above the altar at the eastern elevation is a three-bayed Venetian stained glass window. There is heraldic glass in the two upper west windows. There are C18 and C19 grey and white marble wall monuments in the chancel, finely carved gallery monument of 1707, 1800 gallery monument by Cox, and 1741 by B Palmer.
The Heritage at Risk Register for 2012 states that "Holy Cross is clearly well cared for and well maintained. However, some high level ironstone blocks and limestone balusters have weathered badly. Parapet and balustrade masonry is of particular concern. Some masonry fragments have already fallen. A grant was offered in December 2011" .. and, with locally raised funds and a large anonymous donation, work was carried out between May and October 2013.
It has been the only Church of England church in the town, except when there was a daughter church of St James, a Commissioners' church built in 1839, by architect Hugh Smith, and stood on the east side of St James Street. It was demolished in 1962.