Durham Police said Thursday that Maurice Agis died at the age of 77 in Spain where he lived. The cause of death was not disclosed.
Two women aged 68 and 38 were killed when they were hurled from Agis' inflatable artwork "Dreamspace" as it was blown 30 feet (9 meters) into the air by a gust of wind in Chester-le-Street, northeast England.
Agis was charged with manslaughter but convicted in March of lesser health and safety violations and fined.
"Dreamspace" was a structure made of translucent PVC sheets which allowed spectators to crawl through its network of tunnels.
It had toured Europe without incident for a decade before the accident.