This study was motivated by the researchers’ goal to unfold the quality of the English translations of Persian tourism industry texts and discover the most frequent error patterns the Iranian non-native translators have committed in such texts. Thus, the following research questions were addressed: 1) Are the English versions of Persian tourist guidebooks and multimedia compact discs provided by Iranian translators appropriate in terms of syntax, semantics and pragmatics?, and 2) What are the possible patterns of the errors found in English translations of Persian tourist guidebooks?
To answer these questions, three English tourist guidebooks translated from their Persian source texts into English by Iranian translators as well as two multimedia compact discs whose primary purpose was to introduce Isfahan tourist attractions in English were selected and carefully studied. Three hundred sentences were randomly extracted and subjected to error analysis. The results of the analysis indicated that over one-third of the total number of the sentences under study were syntactically, semantically or pragmatically erroneous. Thus, based on the proposed model of the study which was a combination of American Translation Association's (ATA, 2010) error identification categories and Keshavarz’s (1993) linguistic taxonomy of errors, the most frequent errors were identified and statistically tabulated. Most of the syntactic errors came to belong to ‘grammar’ pattern, most semantic errors to ‘terminology, word choice’ pattern , most pragmatic errors to ‘mistranslation into target language’ error pattern, and most translation-specific errors were found to have an ‘Incomplete Passage’ pattern