Klaas Gerling (born January 3, 1981 in Cologne) is known as Klaas, is a German DJ and producer from Cologne in Germany. He works with Micha Moor under the label Scream & Shout. He has remixed Global Deejays, Armand Van Helden, Eddie Thoneick, Michael Mind and is mostly known for his hit remixes of "This Time" by DJ Antoine (2007) and "Infinity" by Guru Josh (2008).

Starting as pumping tech house back in 2003, Klaas' signature musical style today consists of interrupted saw basses, minimal kicks with the beat hits on second bars, and vocal samples. In 2011 he modified his style to feature more dubstep and hard electro-like downtempo basses and tremolo leads instead of vocals.