The 2018–19 Southern Counties East Football League season was the 53rd in the history of the Southern Counties East Football League, a football competition in England, and the third year the competition has two divisions, the Premier Division and Division One.
The provisional club allocations for steps 5 and 6 were announced by the FA on 25 May.[1] These are subject to ratification by the league at its AGM on 23 June.
| Competition: | Southern Counties East Football League Premier Division |
| Season: | 2018–19 |
| Winners: | Cray Valley Paper Mills |
| Promoted: | Cray Valley Paper Mills |
| Relegated: | Rusthall Croydon |
| Matches: | 379 |
| Total Goals: | 1307 |
| Prevseason: | 2017–18 |
| Nextseason: | 2019–20 |
The Premier Division consisted of 17 clubs from the previous season along with three new clubs, promoted from Division One:
| Competition: | Southern Counties East Football League Division One |
| Season: | 2018–19 |
| Winners: | Welling Town |
| Promoted: | Welling Town Erith & Belvedere |
| Matches: | 305 |
| Total Goals: | 1440 |
| Prevseason: | 2017–18 |
| Nextseason: | 2019–20 |
Division One consisted of 14 clubs from the previous season along with four new clubs: