Kelland O'Brien (born 22 May 1998) is an Australian racing cyclist, who currently rides for UCI WorldTeam Team Jayco–AlUla. O'Brien qualified for the 2020 Tokyo Olympics and was part of the Men's team pursuit together with Leigh Howard, Sam Welsford and Alexander Porter. They secured a bronze medal after overlapping New Zealand who had crashed. O'Brien also competed in the Men's Madison where the team finished fifth with a time of 3:48.448 and therefore did not qualify for the final.