| Club: | Rennes |
| Season: | 2018–19 |
| Stadium: | Roazhon Park |
| Mgrtitle: | Head coach |
| Manager: | Sabri Lamouchi (until 3 December) Julien Stephan (from 3 December) |
| Chairman: | Olivier Létang |
| League: | Ligue 1 |
| League Result: | 10th |
| Cup1: | Coupe de France |
| Cup1 Result: | Winners |
| Cup2: | Coupe de la Ligue |
| Cup2 Result: | Quarter-finals |
| Cup3: | UEFA Europa League |
| Cup3 Result: | Round of 16 |
| League Topscorer: | M'Baye Niang (11) |
| Season Topscorer: | M'Baye Niang (14) |
| Highest Attendance: | 29,205 vs Paris Saint-Germain (23 September 2018) |
| Lowest Attendance: | 19,300 vs Angers (18 August 2018) |
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| Prevseason: | 2017–18 |
| Nextseason: | 2019–20 |
The 2018–19 Stade Rennais season was the 117th professional season of the club since its creation in 1901. During this campaign, the club competed in Ligue 1, the Coupe de France, the Coupe de la Ligue and the UEFA Europa League, the latter being Rennes' first participation in European competition since making the qualifying rounds of the 2008–09 UEFA Cup.[1]
Rennes won a third Coupe de France title, and a first since 1971, after defeating Paris Saint-Germain in the final.[2]
See main article: 2018–19 Ligue 1.
See main article: 2018–19 Coupe de France.
See main article: 2018–19 Coupe de la Ligue.
See main article: 2018–19 UEFA Europa League.
See main article: 2018–19 UEFA Europa League knockout phase.
|-! 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|-! colspan=14 style=background:#dcdcdc; text-align:center| Players transferred out during the season