| 2017 City of Onkaparinga ATP Challenger | |
|---|---|
| Date | 2–8 January 2017 |
| Edition | 3rd |
| Draw | 32S / 16D |
| Prize money | $75,000 |
| Surface | Hard |
| Location | Happy Valley, Australia |
| Champions | |
| Singles | |
 Peter Gojowczyk | |
| Doubles | |
 Hans Podlipnik /  Max Schnur | |
The 2017 City of Onkaparinga ATP Challenger was a professional tennis tournament played on hard courts. It was the third edition of the tournament and part of the 2017 ATP Challenger Tour. It took place in Happy Valley, Australia from 2 to 8 January 2017.
| Country | Player | Rank1 | Seed |
|---|---|---|---|
| USA | Donald Young | 88 | 1 |
 BRA | João Souza | 123 | 2 |
| USA | Denis Kudla | 131 | 3 |
 CAN | Peter Polansky | 135 | 4 |
 SVK | Norbert Gombos | 142 | 5 |
 BAR | Darian King | 152 | 6 |
 SLO | Grega Žemlja | 155 | 7 |
 HUN | Márton Fucsovics | 158 | 8 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw with a protected ranking:
The following players received entry from the qualifying draw:
Peter Gojowczyk def. 
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