Composite leaf spring is used as replacement to conventional leaf spring due to versatile advantages offered by it such as, light weight, compact construction, easy to assemble and dismantle, high stiffness, high strength to weight ratio etc. and this is the reason, though cost of design and manufacturing of composite leaf spring is more, it is widely recommend in to suspension application. The balance, stability, reliability and efficiency are other few advantages can be added to the account of leaf spring. Day by day research are undertaken to enhance the design and spring and thus make it available to customer at lowest affordable price with similar and constant performance maintained throughout the operation.Paper describes one such aspect of design of composite leaf spring which will be used in light weight automobiles. The design of spring is carried by considering assumptions and formulas usually applicable under static loading circumstances. The basic intention of the paper is to obtain basic dimensions of spring by using stress-strain relationship, the equation of bending also called in to picture to obtain require dimensions of spring. The dimensions obtaining have proceeded in iterative way, the iterations were continued till last possible value of spring dimensions. The dimensions include length, width, thickness of laminate, number of plies, ply thickness, fibre orientation, fibre and matrix volume fraction etc.