Quethiock (Cornish: Koosek, meaning "forested place") is a village and civil parish in Cornwall, England, United Kingdom, roughly five miles east of Liskeard.

There was a post office at Ivydene until the 1960s not long before the closure of the village General Supply Stores which not only sold everything from groceries to petrol and organs but also delivered weekly groceries to farms, mills and cottages throughout a radius of 15 miles (24 km).

The stained glass and some other ornamental work is the handiwork of the late 19th century vicar, William Willimott, and there are three brasses (1471 to Roger Kyngdon, and 1631 to Richard Chiverton, d. 1617, and his wife).

An account of its discovery was published in the Journal of the Royal Institution of Cornwall; vol.

Arthur Langdon said of it: "Undoubtedly this is a magnificent monument, and in regard to height is, with the exception of the cross in Mylor churchyard, since discovered, the tallest in Cornwall".