The 2015 City of Onkaparinga ATP Challenger was a professional tennis tournament played on hard courts. It was the first edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in Happy Valley, Australia between 3–11 January 2015.
The Onkaparinga Challenger, which was part of the 2015 ATP Tour, took place on the third through the eleventh of January.