Isthmian Division One South East
- England
- 20 teams
Champions: Cray Valley Paper Mills · Promoted: Cray Valley Paper, Chichester City (play-offs)
Split from Isthmian Division One South (2002–now)
2023-24 · 20 clubs
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- 1Cray Valley Paper Mills
- 2Ramsgate
- 3Sittingbourne
- 4Three Bridges
- 5Chichester City
- 6Lancing
- 7Sheppey United
- 8Herne Bay
- 9Broadbridge Heath
- 10Sevenoaks Town
- 11Ashford United
- 12Burgess Hill Town
- 13Hythe Town
- 14Horndean
- 15Merstham
- 16Phoenix Sports
- 17Littlehampton Town
- 18East Grinstead Town
- 19Beckenham Town
- 20Erith & Belvedere
Sources: Wikipedia, API-Football