Since the early 1980s, researchers in the field have tended to focus on how language learners dealt with their language learning and factors which are believed to have relationship with students in their choice of learning strategies. This study is useful for both Vietnamese university teachers and learners as it investigated and clarified how the variables ('perceived' class size, gender, major fields of study, levels of proficiency and attitude toward language learning) relate to the students' choice of learning strategies, and provide some pedagogical implications for both language teachers and language learners in Vietnamese universities in particular and in the world in general. Language teachers may be able to make use of the findings to choose their suitable teaching methods and materials development in teaching to help their students employ effective strategies in learning English. In addition, EFL students may be aware of their learning strategies and may adopt, modify and apply different learning strategies and choose strategies which are the most appropriate for themselves in learning the English language.