The 80th parallel south is a circle of latitude that is 80 degrees south of the Earth's equatorial plane.

It passes through Antarctica and Antarctic ice shelves. Starting at the Prime Meridian and heading eastwards, the parallel 80° south passes through:

80th parallel may refer to:

Wes Carr (born Wesley Dean Carr on 14 September 1982) is an Australian singer-songwriter. He released his first studio album Simple Sum independently in 2008 shortly before entering Australian Idol. In November 2008 he was announced as the winner of the sixth season of Australian Idol. After Idol, he signed a record deal with Sony Music Australia and released his debut single, "You". The song peaked at number one on the ARIA Singles Chart and was certified Gold by the Australian Recording Industry Association (ARIA). Carr's second studio album, The Way the World Looks, soon followed after. It reached number two on the ARIA Albums Chart and also achieved Gold certification. The second single "Feels Like Woah" peaked at number 14 and gained Gold certification. In June 2011 Carr released "Been a Long Time", the lead single from his third album. It peaked at number 33 on the ARIA Singles Chart. In November 2011 Carr announced that he was no longer with Sony and would be releasing his album independently in 2012.