Annika Zillekens is a modern pentathlete who has competed for Germany.
She competed at the 2012, 2016, 2020, and 2024 Summer Olympic Games. She had originally missed the final round of the women's modern pentathlon at Paris 2024 by a single spot, but she was promoted after the defending champion Kate French pulled out from the Games with a stomach ailment.
She is married to Rio de Janeiro 2016 modern pentathlete Christian Zillekens.