Sub 메모글꼴()

    Dim 시트 As Worksheet
    Dim 메모 As Comment
    
    On Error Resume Next
    
    For Each 시트 In ThisWorkbook.Worksheets
    
        For Each 메모 In 시트.Comments
        
            With 메모.Shape.TextFrame.Characters.Font
                .Name = "나눔바른고딕"
                .Size = 11
            End With
        
        Next 메모
    
    Next 시트

End Sub
