Islamic Azad University Roudehen branch (RIAU) is proud to hold the fifteenth international TELLSI conference on 22-24 November, 2017. The conference aims to delve into the theoretical and practical sides of the most contentious and thought-provoking issues in the realms of ELT, English literature, and translation studies. Every year, hundreds of scholars, researchers, teachers, graduate students crave to attend the conference to keep up with the latest, share their views, network with the other members of the discourse community, and experience an academic atmosphere. Several national and international academic figures in the related realms have been invited as our plenary and featured speakers. TELLSI15 is hosted by the department of English Language Teaching (ELT) in the Faculty of Persian Literature and Foreign Languages. Your participation in the 15th TELLSI conference will be a great pleasure for the organizers and will definitely enhance the academic level of the conference. RIAU is looking forward to seeing you in Roudehen.