The purpose of this study was to investigate the competitiveness of manufacturing industries according to Porter's Competitive model in six industries including chemical & cellulose, textile, power & electronics, automotive & auto parts, metal & casting, and food & pharmaceutics industries. The research method was descriptive survey and applied in terms of purpose. The statistical population of the study consisted of 3372 employees of industrial companies in Ilam city. Using Krejcie-Morgan-sample-size table (1995), 246 people were selected by stratified sampling method. To collect data, a researcher-made questionnaire with 25 items was used, verified in terms of that its reliability and validity by Cronbach's alpha and factor analysis methods, respectively. For data analysis, LISREL and SPSS software, one-sample t-test, Friedman prioritization and variance analysis were used. The results showed that the food & pharmaceutics industry with the average score of 3.27 and the electrical & electronics industry with the average score of 3.25 ranked the highest and the lowest respectively in terms of competitiveness based on Porter's Five Forces Model.
