The parish church (Church of Scotland) has registers dating from 1728. Old Parish Registers (before 1855) are held in the National Records of Scotland in Edinburgh, and copies on microfilm may be consulted in local libraries and in LDS Family History Centres around the world. Later parish registers (after 1855) are often held in the National Records of Scotland as are any records of non-conformist churches in the area (often unfilmed and unindexed, and only available there).
In his entry for the Statistical Account of Scotland (compiled 1790s, see the Statistics section of the Berwickshire page for more details) the Rev. Alexander Girvan made the following comment about deficiencies in the parish registers of Langton in the late 18th century:
"The register of baptisms, marriages, and burials, has never been kept with any degree of exactness; and I wish not to have any thing inserted in this account, for the truth of which I cannot answer."
The parish registers available worldwide on microfilm include kirk session accounts for the years 1730-1773 and minutes for 1747-1823 (in part 747/1 of the microfilm). More information on kirk sessions and their records can be found in the Church Records section of the Berwickshire page.
The presence of non-conformist churches in the parish is revealed by Rutherfurd's Southern Counties Register and Directory which lists the following in the year 1866:
There may have been other non-conformist churches at different times.