St Ewe (Cornish: Lannewa) is a civil parish and village in mid-Cornwall, England, United Kingdom, which is believed by hagiographers to have been named after the English moniker of Saint Avoye.

[2] Evidence of early medieval habitation is in the form of a roadside Celtic cross that once stood near Nunnery Hill (Charles Henderson in 1925 refers to it being at Lanhadron).

The base has survived in situ with an inscription in insular script, unreadable except for the word crucem; Elisabeth Okasha dates the construction of this monument between the ninth and eleventh centuries.

[7] The small manor of Lanewa was for a long time linked to the advowson of the church; it was probably the secular successor to a Celtic monastery.

[8] The Heligan estate is located at the eastern edge of the parish of St Ewe, overlooking the small port of Mevagissey.