Joshua "Josh" Slack (born 16 December 1976) is a male beach volleyball player from Australia.

In 2002 he convinced Andrew Schacht to come out of retirement and the pair won bronze at the 2003 World Tour in Portugal.

A three-time Olympian, he's also collected medals in international competitions such as the Canadian FIVB Tour and the World Championships.

In 2002 he teamed up with Andrew Schacht (who came out of retirement) and the pair won bronze at the 2003 World Tour in Portugal.

They then went on to win a national title, a top 10 international ranking and 2004 Olympic Team selection.