| Club: | 1. FC Kaiserslautern |
| Season: | 2017–18 |
| Manager: | Jeff Strasser |
| Stadium: | Fritz-Walter-Stadion |
| League: | 2. Bundesliga |
| League Result: | 18th (relegated) |
| Cup1: | DFB-Pokal |
| Cup1 Result: | Second round |
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| Updated: | 28 January 2018 |
| Prevseason: | 2016–17 |
| Nextseason: | 2018–19 |
The 2017–18 1. FC Kaiserslautern season was the 118th season in the football club's history. The season covered a period from 1 July 2017 to 30 June 2018.
See main article: article and 2017–18 2. Bundesliga.
See main article: article and 2017–18 DFB-Pokal.
|-! colspan=12 style=background:#dcdcdc; text-align:center| Players transferred out during the season