2017–18 Campeonato de Portugal
| Season | 2017–18 |
|---|---|
| Champions | Mafra (2nd title) |
| Promoted | Mafra Farense |
| Matches played | 1,230 |
← 2016–17 2018–19 → | |
The 2017–18 Campeonato de Portugal is the fifth season of Portuguese football's renovated third-tier league, since the merging of the Segunda Divisão and Terceira Divisão in 2013, and the third season under the current Campeonato de Portugal title. A total of 80 teams compete in this division, which began on 20 August 2017 and ended on 10 June 2018.