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Background: In recent years, food security has become a global problem. Therefore, identifying and recommending a comprehensive index that can provide an accurate image of food security situation is necessary.Methods: In this study, Global Food Security Index (GFSI) was used for the first time to identify Iran food security situation during 1981-2013. This index was introduced by Economist Intelligence Unit in 2012 and is a quantitative and qualitative dynamic model that consists of unique dimensions of food security such as affordability, availability, quality and safety. To identify the factors affecting food insecurity, this index focuses on unique qualitative components that illustrate government policies. To calculate the index, the data of macro-level gathering from Food Agricultural Organization, World Bank, Central Bank, and Budget Law were used. If index level rates at 75.1-89.7, it is identified as the best condition, and 57.8-75 as good, 44.2-57.2 as average, and 16-44.1 as critical condition.Findings: Food security situation increased with fluctuations; increases and decreases were seen in some years. So, the lowest level of food security was in 1981 with a score of 28% showed the critical situation and the best levels were in 2011 with a score of 71.6% and last year of studying (2013) with a score of 65% had good situations.Conclusion: Given the undeniable importance of food security, the need to identify new index of GFSI is necessary. According to results, the food security situation increased in Iran; but has distance from the best performance. So, the efforts of policy makers are required to promote the condition.

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