| Season | 2018 |
|---|---|
| Champions | Burren (14th title) |
| Relegated | Glenn John Martin's |
← 2017 2019 → | |
The 2018 Down Senior Football Championship was the 110th official edition of Down GAA's premier Gaelic Football tournament for senior clubs in County Down. 16 teams compete with the winner representing Down in the Ulster Senior Club Football Championship.
The tournament operated a double elimination format for the opening two rounds of the championship, with the winners and early round losers rejoining at the quarter-final stage.
Kilcoo Owen Roe's were the defending champions after they defeated Burren 0–13 to 0–11 in the 2017 final.
Rostrevor return to the senior grade after claiming the Down I.F.C. title in 2017. Carryduff make their senior return after breaking into the top 15 ranked teams (3rd in Division 2 - ranked 15th overall) in the Down football leagues for 2017.
On 14 October 2018 Burren spurned Kilcoo's hopes for 7-in-a-row of Down S.F.C. titles when defeating them in the final at Páirc Esler by 2–12 to 2-9 and claiming their 14th S.F.C. triumph in the process.[1]
Glenn John Martin's were relegated to the 2019 I.F.C. after finishing outside the top 15 ranked teams in the Down football leagues for 2018. They finished 5th (ranked 17th overall) in Division 2. Bredagh will replace them after they claimed the 2018 Down I.F.C. title.