This paper presents the findings of a qualitative study exploring students’ perspectives on the factors boosting learner autonomy (LA) development. This study involved 393 English-majored students from a Ho Chi Minh City based higher education institution in answering open-ended questionnaires. The content analysis approach was used to analyze the qualitative data. The findings revealed that three major factors, viz. teacher-related factors, school-related factors and parental factors were believed to positively affect students’ LA emergence. However, research participants reckoned that teacher-related factors had a major role in boosting students’ LA development while school-related factors and parental factors played contributing roles in shaping students’ LA.