| Club: | Darmstadt 98 |
| Season: | 2017–18 |
| Chairman: | Klaus Rüdiger Fritsch |
| Stadium: | Merck-Stadion am Böllenfalltor |
| League: | 2. Bundesliga |
| League Result: | 10th |
| Cup1: | DFB-Pokal |
| Cup1 Result: | First Round |
| Highest Attendance: | 17,400 |
| Lowest Attendance: | 13,650 |
| Average Attendance: | 15,848 |
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| Prevseason: | 2016–17 |
| Nextseason: | 2018–19 |
The 2017–18 SV Darmstadt 98 season was the 120th season in the football club's history and their 18th overall season in the second tier of German football, the 2. Bundesliga. It was the club's first season return in the second division, since relegation from the Bundesliga in 2016–17.
|-! colspan=14 style=background:#dcdcdc; text-align:center| Goalkeepers|-! colspan=14 style=background:#dcdcdc; text-align:center| Defenders|-! colspan=14 style=background:#dcdcdc; text-align:center| Midfielders|-! colspan=14 style=background:#dcdcdc; text-align:center| Forwards
| No. | Pos. | Name | Age | NAT | EU | Moving from | Type | Transfer Window | Contract ends | Transfer fee | Sources | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 | Midfielder | Julian Von Haacke | Yes | NEC Nijmegen | Transfer | Summer | 30 June 2020 | €200,000 | [1] | |||
| 5 | Midfielder | Slobodan Medojevic | Yes | Eintracht Frankfurt | Transfer | Winter | 30 June 2019 | [2] | ||||
| 5 | Midfielder | Ji Dong-Won | Yes | FC Augsburg | Loan | Winter | 30 June 2018 | [3] | ||||
| 7 | Forward | Felix Platte | Yes | FC Schalke 04 | Transfer | Summer | 30 June 2021 | €800,000 | [4] | |||
| 38 | Midfielder | Romuald Lacazette | Yes | TSV 1860 Munich | Transfer | Summer | 30 June 2020 | Free | [5] | |||
| 9 | Forward | Jamie Maclaren | No | Brisbane Roar | Transfer | Summer | 30 June 2020 | Free | [6] | |||
| 23 | Goalkeeper | Joël Mall | Yes | Grasshopper Club Zürich | Transfer | Summer | 30 June 2019 | Free | [7] | |||
| 20 | Forward | Artur Sobiech | Yes | Free agent | Transfer | Summer | 30 June 2019 | Free | [8] | |||
| 31 | Goalkeeper | Florian Stritzel | Yes | Karlsruher SC | Transfer | Summer | 30 June 2020 | Free | [9] | |||
| 6 | Midfielder | Marvin Mehlem | Yes | Karlsruher SC | Transfer | Summer | 30 June 2020 | €200,000 | [10] | |||
| 27 | Forward | McKinze Gaines | No | VfL Wolfsburg | Transfer | Summer | 30 June 2020 | unknown | [11] | |||
| 11 | Midfielder | Tobias Kempe | Yes | FC Nürnberg | Transfer | Summer | 30 June 2020 | unknown | [12] | |||
| 19 | Defender | Kevin Grosskreutz | Yes | Free agent | Transfer | Summer | 30 June 2019 | Free | [13] | |||
| 14 | Forward | Roman Bezjak | Yes | HNK Rijeka | Loan return | Summer | 30 June 2019 | Free | ||||
| 25 | Midfielder | Yannick Stark | Yes | FSV Frankfurt | Loan return | Summer | 30 June 2018 | Free | [14] | |||
| 40 | Forward | Silas Zehnder | Yes | Darmstadt 98 U19 | Transfer | Summer | 30 June 2021 | Free | [15] | |||
| 28 | Defender | Leo Petri | Yes | Darmstadt 98 U19 | Transfer | Summer | 30 June 2018 | Free | [16] | |||
| 39 | Defender | Paul Schmieder | Yes | Darmstadt 98 U19 | Transfer | Summer | 30 June 2018 | Free | [17] | |||
| 35 | Defender | Niklas Kern | Yes | Darmstadt 98 U19 | Transfer | Summer | 30 June 2018 | Free | [18] | |||
| – | Forward | Manassé Eshele | Yes | Darmstadt 98 U19 | Transfer | Summer | 30 June 2020 | Free | [19] |
| No. | Pos. | Name | Age | NAT | Moving to | Type | Transfer Window | Transfer fee | Sources | |
|---|---|---|---|---|---|---|---|---|---|---|
| 31 | GK | Michael Esser | Hannover 96 | Transfer | Summer | €2,000,000 | ||||
| 8 | MF | Jérôme Gondorf | Werder Bremen | Transfer | Summer | €1,200,000 | ||||
| 8 | MF | Mario Vrancic | Norwich City | Transfer | Summer | €750,000 | ||||
| – | FW | Manassé Eshele | FSV Frankfurt | Loan | Summer | – | [20] | |||
| 27 | DF | Can Luka Aydogan | unknown | End of Contract | Summer | Free | ||||
| 24 | GK | Igor Berezovsky | unknown | End of Contract | Summer | Free | ||||
| 5 | GK | Benjamin Gorka | unknown | End of Contract | Summer | – | ||||
| 37 | FW | Liam Fisch | VfB Ginsheim | Transfer | Summer | Free | ||||
| 35 | DF | Johannes Wolff | unknown | End of Contract | Summer | – | ||||
| 9 | FW | Dominik Stroh-Engel | Karlsruher SC | End of Contract | Summer | Free | ||||
| 22 | FW | Denys Oliynyk | Desna Chernihiv | End of Contract | Summer | – | ||||
| 38 | DF | Daniel Thur | unknown | End of Contract | Summer | – | ||||
| 20 | FW | Marcel Heller | FC Augsburg | End of Contract | Summer | – | ||||
| 7 | DF | Artem Fedetskyy | Karpaty Lviv | End of Contract | Summer | – | ||||
| 16 | FW | Antonio Colak | 1899 Hoffenheim | End of Loan | Summer | – | ||||
| 33 | FW | Sidney Sam | Schalke 04 | End of Loan | Summer | – | ||||
| 19 | FW | Felix Platte | Schalke 04 | End of Loan | Summer | – | ||||
| 2 | FW | Leon Guwara | Werder Bremen | End of Loan | Summer | – | ||||
| 39 | FW | Sven Schipplock | Hamburger SV | End of Loan | Summer | – |
See main article: article and 2017–18 2. Bundesliga.
See main article: article and 2017–18 DFB-Pokal.