This study examined the experiences of a group of six preservice English language teachers in Hong Kong as they prepared for, engaged in, and reflected upon a compulsory research project during the final year of their Bachelor of Education degree program. The article discusses the experiences of these preservice teachers in terms of the construction of their teacher identities. The findings illustrate the identity conflicts the preservice teachers experienced as their research engagement required that they cross institutional and educational boundaries to confront, question, and reject various identity positions, including ‘student teacher’, ‘full-time teacher’, and ‘teacher-researcher’. The article concludes that the lens of teacher identity can provide insights into how student teachers’ perceptions and experiences of research shape and are shaped by their understandings of themselves as teachers.