
Cuby is a civil parish and village in Cornwall, England, United Kingdom, situated approximately 7 miles south-west of St Austell.
The church of Cuby is dedicated to Saint Cuby, a Welsh saint: since the parish church of Tregony was lost to the River Fal ca. 1540 Cuby Parish Church has been in fact the parish church of Tregony. The church was rebuilt in 1828 though some of the medieval masonry still exists on the north side and the tower is of the 14th century.