Abstract
Writing skill is one of the four language skills in learning English language in EFL setting. The role of self-esteem in learning second language as is one of the major important factors is very vital; because, success or failure of a learner depends mostly on the degree of ones' self-esteem. This research aimed at investigating the correlation between self-esteem and English writing achievement of Iranian EFL learners. The Iranian learners who participated in this research were sixty male and twenty female students from two English Language Institutes in Borazjan city in Bushehr State. The outcome of this research showed that the students' writing achievement was significantly affected by their self-esteem; that is, self-esteem as a psychological factor had a positive relationship with students' English writing. There was a significant correlation between self-esteem and English writing achievement.