Jennifer "Jenny" Turrall (born May 9, 1960) is a retired Australian swimmer who won two medals in the 400 m and 800 m freestyle at the 1975 World Aquatics Championships. She competed in the same events at the 1976 Summer Olympics with the best achievement of eighth place in the 800 m freestyle.
She was not yet 14 when she won three medals, two silver and one gold, at the 1974 British Commonwealth Games and set a world record in the 800 m freestyle. She set another world record in the same event in 1975. Between 1973 and 1975 she also set and then four times improved her world record in the 1500 m freestyle. She retired from swimming in 1976 due to injuries. After finishing school she worked at a TV station in Sydney, but then changed to healthcare and in 1982 received a nursing degree from the Concord Hospital in Sydney. Later she married, and changed her last name to Wetton. In 1993 she was inducted to the Sport Australia Hall of Fame.