Public Sub HideAllButOne()
Const sVISIBLENAME As String = "VisibleSheetName"
Dim wsSheet As Worksheet
Application.ScreenUpdating = False
Worksheets(Worksheets.Count).Visible = True
For Each wsSheet In Worksheets
With wsSheet
.Visible = (.Name = sVISIBLENAME)
End With
Next wsSheet
Application.ScreenUpdating = True
End Sub