Hemyock is a village and civil parish in Devon, England.  It is about 8 miles north-west of Honiton and 5 miles (8 km) south of the Somerset town of Wellington.

Hemyock is the largest village on the Blackdown Hills, which is now designated as an Area of Outstanding Natural Beauty (AONB). Its northern boundary forms part of the Devon – Somerset border, and clockwise from there, it is surrounded by the Devon parishes of Clayhidon, Dunkeswell, Uffculme and Culmstock.