Textbooks in ELT perform different functions since their content can serve different purposes. Particularly, the content of textbooks can affect learners’ views to a great deal. Accordingly, designing ELT textbooks can generate much disagreement. Thus, textbook content is considered important and demands critical evaluation. This study explored the representation of national identity in the English Vision textbook series for Iranian senior high schools. For this aim, corpus analysis and content analysis were carried out, respectively, aimed at providing a description of the terms associated with nationalities, and describing aspects of national identity represented in the textbooks. The data in the corpus analysis phase were collected through obtaining frequencies of reference to nations and in the content analysis phase by means of a researcher-made checklist. Results revealed that Iranian identity is the most frequent aspect, for which 13 categories of reference were observed. Similarly, six major themes were found regarding aspects of national identity. This study offers implications for Iranian education policy-makers, textbook designers, and education practitioners.
