| Date: | 17–22 January |
| Edition: | 1st |
| Surface: | Hard (indoor) |
| Location: | Koblenz, Germany |
| Champs: |  Ruben Bemelmans |
| Champd: | Hans Podlipnik /  Andrei Vasilevski |
The 2017 Koblenz Open was a professional tennis tournament played on indoor hard courts. It was the first edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Koblenz, Germany between 17 and 22 January 2017.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Czech Republic | Lukáš Rosol | 113 | 1 | |
 Argentina | Guido Andreozzi | 115 | 2 | |
 Italy | Alessandro Giannessi | 124 | 4 | |
 Romania | Marius Copil | 127 | 5 | |
 Russian Federation | Teymuraz Gabashvili | 140 | 6 | |
| Argentina | Marco Trungelliti | 150 | 7 | |
| Grega Žemlja | 152 | 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 into the singles main draw as alternates:
The following players received entry from the qualifying draw:
The following players received entry into the singles main draw as lucky losers:
See main article: 2017 Koblenz Open – Singles.
Ruben Bemelmans def. Nils Langer 6–4, 3–6, 7–6(7–0).See main article: 2017 Koblenz Open – Doubles.
Andrei Vasilevski def. Roman Jebavý / Lukáš Rosol 7–5, 3–6, [16–14].
