The City of Onkaparinga ATP Challenger is a professional tennis tournament played on outdoor hard courts. It is currently part of the ATP Challenger Tour. It is held annually at the Happy Valley Tennis Club in Happy Valley, South Australia, Australia, since 2015.
| City of Onkaparinga ATP Challenger | |
|---|---|
 2016 City of Onkaparinga ATP Challenger | |
| ATP Challenger Tour | |
| Event name | City of Onkaparinga ATP Challenger |
| Location | Happy Valley, South Australia, Australia |
| Venue | Happy Valley Tennis Club |
| Category | ATP Challenger Tour |
| Surface | Hard |
| Draw | 32S/32Q/16D |
| Prize money | €75,000 |
| Website | Website |
Past finals edit
Singles edit
| Year | Champion | Runner-up | Score |
|---|---|---|---|
| 2015 |  Ryan Harrison |
 Marcos Baghdatis |
7–6(10–8), 6–4 |
| 2016 | Taylor Fritz |
 Dudi Sela |
7–6(9–7), 6–2 |
| 2017 |  Peter Gojowczyk |
 Omar Jasika |
6–3, 6–1 |
Doubles edit
| Year | Champions | Runners-up | Score |
|---|---|---|---|
| 2015 |  Andrey Kuznetsov  Aleksandr Nedovyesov |
Alex Bolt Andrew Whittington |
7–5, 6–4 |
| 2016 |  Matteo Donati Andrey Golubev |
 Denys Molchanov Aleksandr Nedovyesov |
3–6, 7–6(7–5), [10–1] |
| 2017 |  Hans Podlipnik Max Schnur |
Steven de Waard Marc Polmans |
7–6(7–5), 4–6, [10–6] |