One of the paradigms that can be used in applicable manner to determine attractiveness and profitability of dredging industry in Iran is the reputation platform of Porter's 5 competitive forces. In this article, the attractiveness of dredging industry in Iran is analyzed and measured based on this model. The main question of the Research is whether investing in Iranian Dredging Industry is Profitable or not. The results indicate that among the competitive forces, suppliers are the main threatening factor in the industry and have relatively high bargaining power and possess approximately more importance and influence than the other forces on the reduction of dredging industry attractiveness in Iran, also the rivalry among dredging companies is increasing and it is considerable threat. The threat resulting from potential rivals and substituting products are a few and the clients have low bargaining power. Each of these three variables is considered as opportunity forces in the industry. According to desirability of the three forces and the results of statistical analysis, dredging industry is attractive in Iran and its investment is profitable. This study is an applied one in terms of purpose and it is considered as a descriptive-surveying study In terms of nature and method. Statistical society of research consists of 170 expert persons. The 124 people were chosen as test subjects by classified random sampling method. In this study a close researcher-made questionnaire was used to collect data.