Alexander Porter (born 13 May 1996) is an Australian professional racing cyclist. Porter qualified for the Tokyo 2020 Olympics and was part of the Men's team pursuit together with Kelland O'Brien, Sam Weisford and Leigh Howard. They secured a bronze medal after overlapping New Zealand who had crashed. Porter 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.

Porter rode in the men's team pursuit at the 2016 UCI Track Cycling World Championships winning a gold medal.