Ada Kowalewski was born in Rössel, Poland. She grew up in Nord- Rhein-Westfalen in the Münsterland. When she was 10 she was on stage for the first time and then played in the school theater. At the age of 19 she came to Berlin, where she completed her acting training at Reduta Berlin. Since then she has acted in many theater productions and has made several short and advertising films. She was also featured in a major advertisement.