Stanecastle was a medieval barony and estate in North Ayrshire, Scotland, first mentioned in 1363[1] and now part of the Irvine New Town project.

The early history of Stanecastle is obscure but it was once believed that the "stane" (stone, Norse: steinn) prefix referred to older Roman structures.

[2] William Fraunces de le Stane held lands which included a chapel dedicated to Saint Bridget.

In the 17th century the twenty shilling lands of old extent called Brydskirk are recorded, but with no mention of a chapel.

The four open and four closed pointed windows were constructed for appearance only at this time and on the west side an armorial panel stone with the Earl of Eglinton's arms was put in place.

Another error occurs on a similar-sized armorial panel now preserved in the quadrangle of Eglinton Country Park in which the symbols are in the wrong quarters.

3. c. 109) gives details of The Road from the Cockpitt near Stone-Castle by Armsheugh, ....[11] Showing that, not unusually, a Cock Pit existed here at one time.

Stanecastle has been the subject of a few sentences from John Galt (born 1779), a native of Irvine, in his Ringan Gilhaize (1823) novel.