| Date: | 4 – 9 May |
| Edition: | 7th |
| Draw: | 32S / 15D |
| Surface: | Clay |
| Prize Money: | €42,500 |
| Location: | Rome, Italy |
| Champs: |  Aljaž Bedene |
| Champd: | Dustin Brown /  František Čermák |
| Before Name: | Rome Open |
| After Name: | Garden Open |
The 2015 Garden Open was a professional tennis tournament played on clay courts. It was the seventh edition of the tournament which was part of the 2015 ATP Challenger Tour. It took place in Rome, Italy between 4 and 9 May 2015.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| United Kingdom | Aljaž Bedene | 91 | 1 | |
| Dustin Brown | 102 | 2 | ||
| Czech Republic | Radek Štěpánek | 120 | 3 | |
| United Kingdom | Kyle Edmund | 130 | 4 | |
 Italy | Marco Cecchinato | 150 | 5 | |
 Japan | Taro Daniel | 164 | 6 | |
 Russian Federation | Konstantin Kravchuk | 167 | 7 | |
 Sweden | Elias Ymer | 171 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry as a special exempt to gain entry into the main draw:
The following players received entry from the qualifying draw:
The following player received entry as a lucky loser:
| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Dustin Brown | Czech Republic | František Čermák | 143 | 1 | ||
| Gero Kretschmer | Alexander Satschko | 201 | 2 | |||
| Wesley Koolhof | Matwé Middelkoop | 282 | 3 | |||
| Czech Republic | Roman Jebavý |  Ukraine | Denys Molchanov | 323 | 4 |
The following pairs received wildcards into the doubles main draw:
See main article: 2015 Garden Open – Singles.
Aljaž Bedene def. Adam Pavlásek 7−5, 6−2See main article: 2015 Garden Open – Doubles.
František Čermák def. 
Andrés Molteni / Marco Trungelliti, 6–1, 6–2