Whithorn is a small burgh in Dumfries and Galloway, Scotland, about ten miles south of Wigtown. The town was the location of the first Christian church in Scotland, the Candida Casa built by Saint Ninian in 397. After this fell into disrepair, a twelfth century priory was built to replace it, but this too has long been in ruins. A museum in the town contains archaeological finds from the site.

Whithorn's link to the sea is the seaport known as the Isle of Whithorn, also linked to St Ninian, and the location of the thirteenth century St Ninian's Church .