John Klinger (14 May 1984 – 20 May 2024) was a German professional wrestler better known by the ring name Bad Bones.

Klinger worked internationally as part of independent promotions across Europe, Japan, Israel, and the United States.

He participated in and won the January 2011 edition of TNA Gut Check held in London, England.

The following night on 2 February, at TNA One Night Only: Joker's Wild 2, Bones teamed with Samoa Joe, to defeat Christopher Daniels and Robbie E in a qualifying match for the Joker's Wild Gauntlet match.

On 24 February 2017, edition of Impact Wrestling, Bad Bones returned to TNA in a losing effort against the debuting Josh Barnett.