He was born in Vejrum, Jutland, Denmark, baptized Jørgen Axel Jørgensen, the brother of Asger Jorn.
He later changed his family name from Jørgensen to Nash. He was married three times and has six children.
His last marriage was with the painterLis Zwick and would last until his death in 2004.
The last 40 years of his life he lived in the artist collective Drakabyggetoutside örkelljunga in Sweden.
In 1963 Jørgen Nash became an honorary artist of the Royal Danish Academy of Art.