Daniel Küblböck (born 27 August 1985 in Hutthurm, Bavaria, Germany) was a German singer and actor who rose to fame in 2002, thanks to his participation in the first season of the casting show [l971941]. He later appeared in various celebrity TV shows.

In 2011 he was adopted by real estate millionaire Kerstin Elisabeth Kaiser, resulting in an artist name change (first to Daniel Kaiser and later to Daniel Kaiser-Küblböck).

On 9 September 2018 Küblböck disappeared from a cruise ship. According to the cruise company he jumped overboard in the Labrador Sea, 185 kilometers north of St. John's, Canada. As of 10 March 2021 he was officially declared dead.