One of the needs of modern sheet metal forming is reliable knowledge about the formability of a given material. Forming limit diagram (FLD) is the most appropriate tool used to measure the formability. This FLD is influenced by the material / condition of the material, strain condition in geometrical features of a sheet metal. In this paper FLD of perforated Aluminium 1050A sheets are determined by drawing process. Experiments are also conducted to study the influence of percentage of open area, hole size and hole arrangement pattern. © February 2013 IJENS.