Lars Hertervig (February 16, 1830 - January 6, 1902) was a Norwegian painter. His semi-fantastical work with motives from the coastal landscape in the traditional district of Ryfylke is regarded as one of the peaks of Norwegian painting.
Lars Hertervig was born in 1830 at Hattarvagen, in the municipality Tysvar in Norway, from which the family name derives, on the west coast of Norway, north of Stavanger. His family were poor, Quaker farmers. Hertervig studied painting at the Arts Academy of Dusseldorf from 1852, as the private pupil of Hans Gude, until he experienced a temporary mental breakdown two years later, and moved back to the Stavanger area. In October 1856, Hertervig entered Gaustad asylum.