Tim Dieck is a German competitive ice dancer. With his former skating partner Katharina Müller, he is a two-time German national champion and has won many senior international medals, including two silver medals on the ISU Challenger Series and three gold medals at the German NRW Trophy. They have represented Germany at the European and World championships. In December 2022, it was announced that Dieck had teamed up with British-Spanish ice dancer Olivia Smart.

Katharina Müller is a retired German competitive ice dancer. With her skating partner Tim Dieck, she is a two-time German national champion and has won many senior international medals, including two silver medals on the ISU Challenger Series and three gold medals at the German NRW Trophy. They have represented Germany at the European and World championships.