Calthwaite is a small village in rural Cumbria, England, situated between the small market town of Penrith and the larger city of Carlisle. It is within of the civil parish of Hesket and the unitary authority of Westmorland and Furness, but historically part of the traditional county of Cumberland. It has a population of around 100 people. In 1870-72 the township had a population of 269 and a railway station.