Capital markets are very important in economic development and financial policy makers are very interested to increase the stock markets atractiveness. Three critical questions in determining the attractiveness of a given stock market are: what factors make a stock market attractive from the stand point of investors? how can we evaluate the existing attractiveness degree of a given stock market? and how can we improve a stock market atractiveness conditions? This paper is aimed to answer these important questions. It also provides the results of the case study of the Tehran Stock Exchange (TSE). Using a developed questionare, distributed among financial experts and analysts of the TSE, the collected data was analyzed. The results clearly show despite of several recent attempts, the TSE is not yet attractive for foreign investors and the attractiveness condition of the TSE is in a relatively weak condition. The paper ends with some concluding remarks.