Option Explicit
Sub Onglets_supprimer_tous_sauf()
Dim o As Worksheet
For Each o In Worksheets
Application.DisplayAlerts = False
'Adapter les noms
If o.Name <> "a" And o.Name <> "b" And o.Name <> "c" And o.Name <> "d" And o.Name <> "e" And o.Name <> "f" Then o.Delete
Next
Application.DisplayAlerts = True
End Sub