Imke Susann Onnen (born 17 August 1994) is a German athlete specialising in the high jump.
She won a bronze medal at the 2019 Summer Universiade.
Her personal bests in the event are 1.94 metres outdoors (Göttingen 2019) and 1.96 metres indoors (Leipzig 2019).
She comes from a sporting family, her brother Eike also being a high jumper while mother Astrid Fredebold-Onnen a former heptathlete (as well as Imke's coach).