Hans Ziller (born May 18, 1959) is the master mind, founder, lead guitarist, backing vocalist and primary composer of the German 1980s melodic hard rock band Bonfire. He founded the band called Cacumen (a predecessor of Bonfire) as a teenager in 1972. In 1989 in the middle of working on Bonfire's third album Point Blank – which, like the earlier albums, was produced by Michael Wagener – Hans Ziller left the band because of insurmountable differences with the management and the rest of the band and began a project of his own called EZ Livin’. 1993 he continued with Bonfire.
Hans Ziller in 2014 resurrected EZ Livin’ for a solo venture that was originally planned to be temporary. On January 11, 2015 Ziller reformed Bonfire. The initial album of the new line-up, Glörious, made the German top 50 GFK album charts, and at the end of 2015, Ziller signed a new contract with the UDR/Warner label. In 2016, Bonfire released the album Pearls on UDR to commemorate the 30th anniversary of the band and embarked on an extended tour to promote the album.