This qusi-experimental study investigated the instructional efficacy of genre-based approach on Iranian EFL learners‘motivation for writing. Out of 180 participants, 60 EFL male and female students at university level, with the age range of 19-28, based on a standard profeciency test, Preliminary English Test (PET), were selected and randomly assigned into control and experimental groups. Each group contained 30 students for which a pre-test and post-test were administered. The teaching materials of narrative texts were prepared in a way to conform to the genere-based approach. The results of the study, based on statistical analysis of one way of ANOVA, indicated that the genre-based methodology had significant effects on Iranian EFL learners‘ motivation for writing.
