Maisie Summers-Newton (born 26 July 2002) is a British para-swimmer, competing in S6 disability events.
In August 2018, she took gold in the IPC Swimming European Championships SM6 200m individual medley and set a new world record at 2:59.60.
She also holds the S6 100m Breaststroke world record in 1:33.92, which she achieved in May 2018 at the British Para-Swimming International Meet.She was nominated for the 2018 BBC Young Sports Personality of the Year, joining a shortlist of 10 other British athletes.