Christine Anna Maria Theiss (née Hennig, born 22 February 1980) is a German former kickboxer.

From 1988 to 2000, Theiss learned semi-contact kickboxing in the Karate Dojo Aleksandar eV in Bayreuth.

Having won 22 world championship fights, Theiss is considered to be one of the most successful professional kickboxers of all times and a celebrity in Germany.

Since January 2011, she has an exclusive contract for the television broadcasts of her bouts with Sat.1 (Steko's Fight Night).

[1][4] On 22 February 2013, she defeated Cathy Le-Mée, the WKA and WKU world champion in the weight class of 65 kg per KO in the fifth round.

[5] She lost her fight against Russian kickboxer Olga Stavrova on 7 June 2013, in Munich after ten rounds by split decision.