摘要:Considering the undeniably important role of public sign, it is evident that the quality of their translation into English can affect tourists more than local people. The low quality of English translation of Persian public signs can causes many problems for tourists including stress and discomfort. Besides, errors in bilingual public signs make it harder for tourists to meet their public needs. The present study aimed at investigating the existing errors in the English translation of Persian public signs based on Liaoʼs Model (2010). The corpus used in this descriptive, analytic, comparative qualitative research included 308 bilingual public signs erected in Mashhad City in Iran, photographed by the researcher. There were 198 cases of errors on bilingual public signs. The results showed that Rendition Errors, Language Errors, and Miscellaneous Errors were the common types of errors in the English translation of Persian public signs. It was also found that, Language Errors (74.74%) had the highest frequency and Miscellaneous Errors (2.02%) had the lowest frequency. Thus, it appears that translators in charge of translating Persian public signs were not adequately familiar with the target culture. They were not aware of the sensitivity of translating these signs. The findings of the present study can have implications for urban studies, Municipality Office and the Public Traffic Office in Iran. It has practical implications for tourism especially in Iran as a tourist attraction.