Kate Maree Gynther (born 5 July 1982) is an Australian former water polo player.

[17] In 2005, she was part of the side that won a bronze medal at the FINA World League Super Finals in Kirishi, Russia.

[19] She was named to the team that competed in 2008 at the FINA world league preliminary round in Tianjin, China.

[10] In a 2008 Asia-Oceania qualifier against China for the World League Super Finals, she played in the 11–9 win that went to a penalty shoot out.

[20] She was a member of the Australia women's national water polo team that won a bronze medal at the 2008 Beijing Olympics.

[21] In April 2011, she attended a training camp at the Australian Institute of Sport where the coach was "selecting a team for the major championships over winter.

"[22] In 2011, she was one of five Queensland women to compete for the Australian Stingers in the FINA World League competition held in Auckland, New Zealand.

[23][24] In July 2011, she was a member of the Australian Stingers that competed in the 2011 FINA World Championships in Shanghai as a field player.

[28] She was part of the Stingers squad that competed in a five-game test against Great Britain at the AIS in late February 2012.