Selection of enterprise resource planning systems is considered a crucial management decision due to the high costs of purchase and implementation processes and the complexity of implementing a new system. The present study aimed to define and select resource planning system and rank the factors affecting the deployment using fuzzy multi attribute decision making approach. From the viewpoint of the nature of the research question and purpose, the present study is an applied research and from the viewpoint of data collection, it is a survey. The statistical population consisted of the managers and technicians of the related industries. Based on Morgan’s standard table, 226 people were selected as the research sample by simple random sampling. Data analysis was performed using fuzzy TOPSIS technique. The factors influencing the selection and implementation of enterprise resource planning systems were identified as (infrastructure, economic development, the production, the regional success and regional instruments, computer culture, organizational size, management commitment and process reengineering). After reviewing the applications and enterprise resource planning systems, seven systems which have better performance and availability were elected. The results suggest that three priority enterprise resource planning systems whose weights are close together include: Oracle system with the highest weight (0.6960), the system QAD (0.6181), and the PeopleSoft (0.5978). Lawson system, J.D. Edwards’s system, SAP system, and Bann system are placed in the subsequent ranks.