| 2018–19 Cuban National Series | |
| League: | Cuban National Series |
| Sport: | Baseball |
| Duration: | 9 August – 13 October 26 October – 25 December |
| No Of Games: | 60 |
| No Of Teams: | 16 |
| Season: | Regular season |
| Season Champ Name: | Best record |
| Season Champs: | Las Tunas (34–26) |
| Playoffs: | Postseason |
| Finals Champ: | Las Tunas (1st title) |
| Finals Runner-Up: | Villa Clara |
| Seasonslistnames: | SNB |
| Prevseason Link: | 2017–18 Cuban National Series |
| Prevseason Year: | 2017–18 |
| Nextseason Link: | 2019–20 Cuban National Series |
| Nextseason Year: | 2019–20 |
The 2018–19 Cuban National Series was the 58th season of the league.[1] Las Tunas defeated Villa Clara in the series' final round to capture their first championship.[2]