Thirkleby, Kirby Grindalythe

Thirkleby is a hamlet in the civil parish of Kirby Grindalythe, in North Yorkshire, England. Roger of Thirkleby (died 1260), a judge and Chief Justice of the Common Pleas, was named after this place.

Thirkleby Manor Farmhouse is a grade II listed building, being an 18th-century red-brick two-storey building altered in the early and middle 19th century. The site of a medieval settlement is adjacent.

Thirkleby was formerly a township in the parish of Kirby-Grindalyth, in 1870–72 the township of Thirkleby had a population of 50 people in 9 houses. In 1866 Thirkleby became a separate civil parish, on 1 April 1935 the parish was abolished and merged with Kirby Grindalythe. In 1931 the parish had a population of 49.

Until 1974 it was in the East Riding of Yorkshire. From 1974 to 2023 it was in Ryedale district.