The 2015 Apia International Sydney was a joint 2015 ATP World Tour and 2015 WTA Tour tennis tournament, played on outdoor hard courts in Sydney, New South Wales. It was the 123rd edition of the tournament and took place at the NSW Tennis Centre in Sydney, Australia. It was held from 11 January through 17 January 2015 as part of the Australian Open Series in preparation for the first Grand Slam of the year.