Johanna Griggs
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Johanna Leigh Griggs (born 17 October 1973) is an Australian television presenter and a former competitive swimmer. She won a bronze medal at the 1990 Commonwealth Games.

Griggs has been at the Seven Network since 1993 where she joined Seven Sport, first as a host at the Australian Open. She hosts the network's Olympic Games, Commonwealth Games and the Australian Open, as well as being a presenter of their Melbourne Cup coverage. She has been the host of Better Homes and Gardens since 2005 and House Rules since 2013.

Griggs represented Australia at the Auckland Commonwealth Games in 1990—winning a bronze medal in the 100m backstroke event.

In winning the 50-metre backstroke race at the Australian Swimming Championships in 1993, Griggs recorded the fastest time in the world (that year) for the event. The day following that swim, she announced her retirement from competitive swimming.