Karl Oscar Isakson (16 January 1878, in Stockholm – 19 February 1922) was a Swedish painter who spent much of his professional life in Denmark where he is considered to be one of the fathers of Modernism. He had close associations with the Bornholm school of painters and made many paintings of Christiansø.[1] He is cited as an artist who "sought to give their Biblical works a modern social and political context."[2]