David Kieran Nyika is a New Zealand professional boxer. As an amateur, he won a gold medal at both the 2014 and 2018 Commonwealth Games as well as competing at the 2017 and 2019 World Championships. Nyika and Sarah Hirini were the New Zealand flag bearers at the 2020 Summer Olympics. Nyika gained significant media attention after an incident during the Round of 16 at the 2020 Summer Olympics in which Moroccan boxer Youness Baalla attempted to bite Nyika's ear.