Logistics has a wide range of activities, one of the most important of which is transportation. Proper planning and efficient management of logistics activities can greatly reduce an organization's operating costs. For this reason, in recent decades, improving logistics processes has been used by successful organizations as a key criterion for reducing costs at inter-firm levels. One of the institutions active in the field of improving business processes and logistics is the GS1 global organization. This global organization, with the slogan "The Universal Language of Business," seeks to provide appropriate solutions to facilitate supply chain processes and improve businesses. For this purpose, GS1 has developed and presented a series of global standards for coding and identifying items, one of which is specific to logistics and transportation. The purpose of this article is to present a model of the impact of this standard on logistics and transportation in Iran. The research method is to use the fuzzy Delphi method to test the model and also to use the TOPSIS technique to determine the impact of GS1 standards on business processes in the field of transportation and logistics. The results showed that among the 5 business processes in the field of transportation and logistics, namely property management, warehouse management, receipt and delivery management, transportation management and port and customs management, the implementation of GS1 standards in the field of transportation and logistics has the greatest positive impact on the receipt and delivery management process.