Lewannick (/luˈɒnɪk/; Cornish: Lannwenek) is a civil parish and village in Cornwall, England, United Kingdom. The village is situated approximately five miles (8 km) southwest of Launceston. The civil parish had a population of 973 at the 2011 census. The parish is rural in character and is within the Deanery and Hundred of East. It is bounded on the north by Trewen and South Petherwin, on the east by Lezant, on the south by North Hill and on the west by Altarnun. The parish church is dedicated to St Martin and is located at grid reference SX 2759 8071.