Jack Cartwright (born 22 September 1998) is an Australian swimmer. He competed in the men's 100 metre freestyle event at the 2017 World Aquatics Championships.
At the 2016 Junior Pan Pacific Swimming Championships, Cartwright won gold medals in the 200 metre freestyle, 100 metre freestyle (where he set a Championships record of 48.91 seconds in the preliminaries), 50 metre freestyle, and the 4×200 metre freestyle relay, a silver medal in 4×100 metre freestyle relay, and a bronze medal in the 4×100 metre medley relay.
World records
Long course metres
split 48.12 (1st leg); with Kyle Chalmers (2nd leg), Madison Wilson (3rd leg), Mollie O'Callaghan (4th leg) split 48.14 (1st leg); with Kyle Chalmers (2nd leg), Shayna Jack (3rd leg), Mollie O'Callaghan (4th leg)