Knowstone is a village and civil parish situated in the North Devon district of Devon, England, halfway between the Mid Devon town of Tiverton, Devon and the North Devon town of South Molton. The hamlet of East Knowstone lies due east of the village. Knowstone was the birthplace of Admiral Sir John Berry (1635-1691), second son of Rev. Daniel Berry (1609-1654), vicar of Knowstone cum Molland.