Vocabulary plays a pivotal role in the development of language proficiency, serving as an essential foundation for the cultivation of listening, speaking, reading, and writing skills, as well as overall communication competence. This is especially important in the context of learning English as a foreign language (EFL). For English-major students, mastering vocabulary not only enhances academic performance but also lays a solid foundation for their future career paths. In an era where education is increasingly intertwined with technology, digital learning tools such as Quizlet are widely used to support the vocabulary learning process in a more flexible, vivid, and effective way. The study aims to explore the attitudes of English-major students toward the use of Quizlet in their vocabulary learning. The study was conducted using mixed-methods, with the participation of 278 English-major students from a private university in Vietnam. The findings show that, overall, students have a positive attitude toward using Quizlet for vocabulary learning. This finding not only contribute to a deeper understanding of the role of technology in supporting vocabulary learning in the EFL context but also provide practical suggestions for instructors on integrating digital tools like Quizlet into language teaching.