Jonas Jonasson was born in the city of Växjö in southern Sweden in 1961.
Jonas first started writing when he was working as a journalist for several Swedish newspapers.
He later on went on to start his own production company. After several years in the media industry Jonas felt the need to do something else. That was when the character Allan Karlsson came to him and he started to write his first novel THE 100-YEAR-OLD-MAN WHO CLMBED OUT THE WINDOW AND DISAPPEARED.