Tensioned membrane structures are pre-stressed membrane structures that are appropriate to be used for long span application. Tensioned membrane structures must depend on their shape and internal pre-stress alone to achieve stability and to carry the loads. Some of the largest stadiums, airports, convention halls and commercial places are tensioned membrane structures. It is essential to perform shape-finding analysis while dealing with tensioned membrane structures. In this study, shape-finding analysis is carried out using computer program for stress analysis which is based on theory of nonlinear displacement method. Shape-finding of membrane surface bordered by Egg has been investigated. In this study, the possibility of adopting the form of Egg as surface shape for tensioned membrane structure has been studied.