The 2017 Prosperita Open was a professional tennis tournament played on clay courts. It was the 14th edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Ostrava, Czech Republic between 1 and 7 May.
| Event | W | F | SF | QF | Round of 16 | Round of 32 | width=85 | Q | width=85 | Q2 |
| Singles | 90 | 55 | 33 | 17 | 8 | 0 | 5 | 0 | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Doubles | 0 |
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Slovakia | Norbert Gombos | 105 | 1 | |
 Czech Republic | Adam Pavlásek | 107 | 2 | |
 Italy | ||||
 Spain | Roberto Carballés Baena | 123 | 4 | |
| Spain | Rubén Ramírez Hidalgo | 151 | 5 | |
| Czech Republic | Lukáš Rosol | 153 | 6 | |
| Czech Republic | Jan Šátral | 155 | 7 | |
| Italy | Marco Cecchinato | 157 | 8 |
The following players received wildcards into the singles main draw:
Dominik Kellovský Zdeněk Kolář David Poljak Dominik ŠprochThe following player received entry into the singles main draw using a protected ranking:
The following players received entry from the qualifying draw:
Attila Balázs
Reda El Amrani
Lenny Hampel Sebastian OfnerThe following players received entry as lucky losers:
Stefano Travaglia def. Marco Cecchinato 6–2, 3–6, 6–4.See main article: 2017 Prosperita Open – Doubles.
Jeevan Nedunchezhiyan / Franko Škugor def. 
Rameez Junaid / Lukáš Rosol 6–3, 6–2.