Thomas-René Gerlach (born June 24, 1973), known professionally as DJ Tonka, is a German electronic dance musician.

In his early career, Thomas-René Gerlach worked with fellow producer Ian Pooley in the groups Outrage, Space Cube, and T'N'I.

In 1996, the partnership was dissolved (an EP with unreleased tracks was still released in 1997), and coincidentally, both started producing a more mainstream-friendly sound.

He achieved some notoriety as a remixer, reworking tunes such as "Trapped" for disco artist Colonel Abrams, "Love Shack" for The B-52's and "Push It" for Salt-N-Pepa.

Tonka cites Grandmaster Flash and Depeche Mode among his influences.