Stefan Gossler was born in 1955 in Siegen. After finishing school he took acting lessons with Else Bongers. In 1979 he had his first theater engagement at the Grips-Theater in Berlin. He also played main roles at the Hansa-Theater in Berlin, e.g. as Pfeiffer in 'Die Feuerzangenbowle' or as Albert Leroi in 'Oscar'.