I discovered this on a website - It will work whether the data is
sorted to get duplicates together or not and is only suitable if you
want to delete a entire row of data


Public Sub DeleteDuplicateRows()
'''''''''''''''''''''''''''''''''''''''''''''''''' '''''''''''''''''''''''''''
' DeleteDuplicateRows
' This will delete duplicate records, based on the Active Column. That
is,
' if the same value is found more than once in the Active Column, all
but
' the first (lowest row number) will be deleted.
'
' To run the macro, select the entire column you wish to scan for
' duplicates, and run this procedure.
'''''''''''''''''''''''''''''''''''''''''''''''''' ''''''''''''''''''''''''''''

Dim R As Long
Dim N As Long
Dim V As Variant
Dim Rng As Range

On Error GoTo EndMacro
Application.ScreenUpdating = False
Application.Calculation = xlCalculationManual


Set Rng = Application.Intersect(ActiveSheet.UsedRange, _
ActiveSheet.Columns(ActiveCell.Column))

Application.StatusBar = "Processing Row: " & Format(Rng.Row, "#,##0")

N = 0
For R = Rng.Rows.Count To 2 Step -1
If R Mod 500 = 0 Then
Application.StatusBar = "Processing Row: " & Format(R, "#,##0")
End If

V = Rng.Cells(R, 1).Value
'''''''''''''''''''''''''''''''''''''''''''''''''' '''''''''''''''''''''''''
' Note that COUNTIF works oddly with a Variant that is equal to
vbNullString.
' Rather than pass in the variant, you need to pass in vbNullString
explicitly.
'''''''''''''''''''''''''''''''''''''''''''''''''' '''''''''''''''''''''''''
If V = vbNullString Then
If Application.WorksheetFunction.CountIf(Rng.Columns( 1),
vbNullString) 1 Then
Rng.Rows(R).EntireRow.Delete
N = N + 1
End If
Else
If Application.WorksheetFunction.CountIf(Rng.Columns( 1), V) 1
Then
Rng.Rows(R).EntireRow.Delete
N = N + 1
End If
End If
Next R

EndMacro:

Application.StatusBar = False
Application.ScreenUpdating = True
Application.Calculation = xlCalculationAutomatic
MsgBox "Duplicate Rows Deleted: " & CStr(N)

End Sub