Katrin Siska (born December 10, 1983 in Tallinn, Estonia) is an Estonian musician and member of the Estonian pop-rock band Vanilla Ninja.
Alongside her musical commitments, Siska has also been studying finance and accounting at a vocational school and international relations and diplomacy in Tallinn. After moving back to Estonia with Vanilla Ninja from Germany in year 2006 she went back to the university again - now she is studying law at Tallinn University of Technology.
She is fluent in Estonian, Russian, English, German and Finnish. At the university she has been studying also French.
Siska was a member of a choir during her schooltime and started playing the piano when she was 7 years old. She has a younger sister.
In August 2009, Siska joined the Estonian Centre Party.[1]