Savaş Yurderi (born 10 February 1975), known by his stage name Kool Savas, is a German rapper of Turkish Origin.

In 2012, he collaborated in "Xavas", a duo formation with Xavier Naidoo, a German soul and R&B singer-songwriter and actor in the album Gespaltene Persönlichkeit.

Yurderi was born on 10 February 1975 in Aachen, Germany, the son of a German mother and a Turkish father from Çorum.

His 2011 album Aura included a single with the same name and a song featuring Xavier Naidoo, titled LMS 2012.

In May 2012, Savas announced a collaborative album with Xavier Naidoo titled Gespaltene Persönlichkeit under the alias "Xavas" scheduled for release in Germany on 21 September 2012.