The British actor was known for playing Jedi master Saesee Tiin in Star Wars: Episode I - The Phantom Menace in 1999.
Bonfils, who was also credited as Kan Bonfils, had been rehearsing for Dante's Inferno, which was to open at The Rag Factory in London on Thursday (January 8).
Members of the Craft Theatre company and paramedics were unable to resuscitate the actor after he collapsed backstage.
Company spokesperson Chris Hislop said: ''Kan collapsed during a rehearsal and the director Rocky Rodriguez Jr performed CPR on location.
"The entire company are in shock. There is absolutely severe sadness, it is a real tragedy."
Dante's Inferno will now open on Saturday (December 10) featuring Ryan Prescott, a close friend of the late Bonfils.
"In honour of Kan Bonfils, Craft Theatre will continue with plans to stage their production of Dante's Inferno, which Mr