Culdaff is a village on the Inishowen peninsula of County Donegal, Ireland. Popular for its beach and housing, it attracts people from all over Ireland. It has a population of approximately 200 people.
The present village dates back to the 8th century and was originally the site of the monastery of St Buadán which the Church of Ireland is named. William Lawson Micks and Samuel Arnold Lawson, acted as Trustees for one hundred acres of bogland at Meenawarra near Culdaff on behalf of the purchaser, Jane Leferre.
Culdaff beach is only about 50 yards away from the village. It includes two beaches, 'the small beach' and 'the big beach'. The beach can be very busy during the summer, and is known for the expansive sand on the main beach, and a large area of rocks around the second and further along the coastline.