The churches to be found in the modern town of Dalry include:
- St Margaret's Church, in the central square, built in 1871-3, whose spire is a distinguishing feature. The church interior was gutted by fire in the 1950s and has been sympathetically restored.
- Trinity Church, built in 1857.
- The Mission Halls, North Street, built in 1876.
The following notes describe some earlier churches.
Dalry is first mentioned in 1226 as a "chapel of Ardrossan". If the parish was not formed at that date, it surely was by 1279 when a certain "Henry, Rector of the Church of Dalry" appears in the Register of the Diocese of Glasgow. There appear to have been two places of worship in the parish by the late 13th century. One was on the east bank of the River Garnock at Kilcush, and th other on the west, situated near to ground called 'the Old Glebe'. The latter appears to have been the main, or parish church; although it would have been a small simple building probably with an earthen floor, thatched roof and a few windows. This church building was almost certainly dedicated to St Margaret of Antioch, a virgin martyr of the 3rd or 4th century.
"The church of Dalry was one of those belonging to the monastery of Kilwinning, and the monks as a matter of course enjoyed the factorial tithes and revenues, a vicarage being established for serving the cure. At the Reformation, the monks received £100 yearly for the rectorial tithes of the church, which were levied for the payment of the annual rent. The lands which belonged to the church were acquired by the Earl of Eglinton after the Reformation. Before the year 1610, the patronage of the church was acquired by John Blair of Blair, the proprietor of the adjacent barony of Blair. His son, Bryce Blair, obtained in 1616, a lease of the tithes of the church of Dalry from Archibald Spottiswoode, who was then the Commendator of Kilwinning."
The first church after the Reformation stood about half a mile south-west of the existing one, while the first church on the present site was erected in the year 1608 and rebuilt in the year 1771. Two stones bearing the dates mentioned may be seen in the west wall of the new church. The present parish church is of Gothic architecture, built from designs by David Thomson, Esq., an eminent Glasgow architect, and cost somewhere about £6,000. The foundation stone was laid with full Masonic honours, by Colonel Muir of Caldwell, Provincial Grand Master Mason of Ayrshire, on 10th May, 1851. The clock by which the spire was graced was the gift of G. Fullarton, Esq., of Kerelaw, and the bell was presented to the parish by James M'Cosh, Esq., of Merksworth.
"Ayrshire Nights Entertainment: A Descriptive Guide to the History, Traditions, Antiquities of the County of Ayr" by John MacIntosh of Galston, Ayrshire, published in 1894, by John Menzies & Co. of Kilmarnock, Dunlop and Drennan.
The Dalry register of births and marriages commences in 1683, but was not regularly kept until 1724. By the acts of the Kirk Session, the observance of the Sabbath was strictly enforced, and the usual strict measures were pursued against those guilty of immoral conduct. However the session minutes do not go back far enough to record those strange cases of witchcraft for which Dalry was somewhat infamous.
There were other non-conformist churches at different times. Such records are usually held in the Scottish Record Office in Edinburgh.