| Date: | 15 – 21 May |
| Edition: | 4th |
| Draw: | 32S / 16D |
| Surface: | Clay |
| Location: | Heilbronn, Germany |
| Champs: |  Filip Krajinović |
| Champd: |  Roman Jebavý / Antonio Šančić |
The 2017 Heilbronner Neckarcup was a professional tennis tournament played on clay courts. It was the fourth edition of the tournament which was part of the 2017 ATP Challenger Tour. It took place in Heilbronn, Germany between 15 and 21 May 2017.
| 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 | |
|---|---|---|---|---|
 Argentina | Nicolás Kicker | 92 | 1 | |
 Russian Federation | Evgeny Donskoy | 94 | 2 | |
| Czech Republic | Adam Pavlásek | 95 | 3 | |
 Slovakia | Norbert Gombos | 103 | 4 | |
| Henri Laaksonen | 105 | 5 | ||
| Argentina | Guido Pella | 109 | 6 | |
| Slovakia | Andrej Martin | 112 | 7 | |
 Norway | Casper Ruud | 119 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
See main article: 2017 Heilbronner Neckarcup – Singles.
Filip Krajinović def. Norbert Gombos 6–3, 6–2.See main article: 2017 Heilbronner Neckarcup – Doubles.
Roman Jebavý / Antonio Šančić def. 
Adil Shamasdin / Igor Zelenay 6–4, 6–1.
