Laddie \l(ad)-die\ as a boy's name is a variant of Ladd (Middle English), and the meaning of Laddie is "manservant; young man".
The baby name Laddie sounds like Laddy and Laddey. Other similar baby names are Paddie, Addie, Larie, Baldie, Buddie, Chaddie, Eddie, Teddie, Neddie, Ladale, Lacie, Ladle, Lannie, Lawrie, Laurie and Roddie.