Joshua John Watson (born 31 July 1977) is an Australian backstroke swimmer who won a silver medal in the 4×100-metre medley relay at the 2000 Summer Olympics in Sydney.

Training at the Kingscliff club near the Queensland border, and coached by Greg Salter, Watson became Australian champion in the 50-metre backstroke in 1996.

However, as it was not an Olympic event, he did not gain national selection until 1997, when he competed at the 1997 FINA Short Course World Championships in Gothenburg, Sweden.

[2] Watson continued to be selected in the same role (except for a self-imposed break in 2002) until the 2004 Summer Olympics in Athens, when he failed to qualify for the semifinals of the 100-metrebackstroke.

This enabled him to collect a gold medal in the 4×100-metre medley relay at the 2001 World Aquatics Championships in Fukuoka, Japan.