Minna Atherton (born 17 May 2000) is an Australian competitive swimmer who won the gold medals in the 100- and 200-metre backstroke events at the 2015 FINA World Junior Swimming Championships in Singapore. She tied the junior world record (held by American Claire Adams) in the 100-metre backstroke and broke the Championships record in the 200-metre backstroke. In 2018 she was in the 2018 Gold Coast Commonwealth games which she didn't place in but made it into the backstroke finals.