Isthmian Division One South East
- England
- 20 teams
Champions: Hastings United · Promoted: Hastings United, Herne Bay (play-offs)
Split from Isthmian Division One South (2002–now)
2021-22 · 20 clubs
Location not stored
- 1Hastings United
- 2Ashford United
- 3Herne Bay
- 4Haywards Heath Town
- 5Cray Valley Paper Mills
- 6Ramsgate
- 7Burgess Hill Town
- 8Corinthian
- 9VCD Athletic
- 10Sittingbourne
- 11Chichester City
- 12Faversham Town
- 13Sevenoaks Town
- 14Three Bridges
- 15East Grinstead Town
- 16Whitehawk
- 17Hythe Town
- 18Lancing
- 19Phoenix Sports
- 20Whitstable Town
Sources: Wikipedia, API-Football