Wynarka is a very small town in South Australia 120 kilometres (75 mi) southeast of Adelaide on the Karoonda Highway (B55) and Loxton railway line in the Murray Mallee. Wynarka lies within the District Council of Karoonda East Murray. The current boundaries of Wynarka include the former locality of Kulde, the next railway station towards Tailem Bend, named after the local Aboriginal word for "brothers".
The name Wynarka is from an Aboriginal word meaning a strayer.
There is an automated telephone exchange, CFS station, small post office and payphone in the main street. There is also a football oval and tennis/netball courts.
Adelaide Crows football player Tyson Edwards grew up in Wynarka and is a former player of the local Wynarka Football Club.
On 15 July 2015, the remains of a young child and a suitcase were discovered near the side of the Karoonda Highway near Wynarka. The child was not identified until October as having been Khandalyce Kiara Pearce who had been reported missing with her mother from extended family in Alice Springs in 2009. Her mother's body had been found but not identified in 2010 in the Belanglo State Forest in New South Wales and is also believed to have been murdered.