2015 City of Onkaparinga ATP Challenger

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.

Seeds

 * Rankings are as of December 15, 2014.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇦🇺 John-Patrick Smith
 * 🇦🇺 Omar Jasika
 * 🇦🇺 Alex Bolt
 * 🇦🇺 Jordan Thompson

The following players received entry from the qualifying draw:
 * 🇦🇺 Andrew Whittington
 * 🇧🇪 Maxime Authom
 * 🇦🇺 Andrew Harris
 * 🇦🇺 Jacob Grills

The following players received entry as a lucky loser:
 * 🇧🇦 Aldin Šetkić

Singles

 * 🇺🇸 Ryan Harrison def. 🇨🇾 Marcos Baghdatis, 7–6(10–8), 6–4

Doubles

 * 🇷🇺 Andrey Kuznetsov / 🇰🇿 Aleksandr Nedovyesov def. 🇦🇺 Alex Bolt / 🇦🇺 Andrew Whittington, 7–5, 6–4