Language teacher motivation has been explored through various contexts in recent decades. However, less attention has been paid to teachers’ motivations for furthering their professional development in multilingual academic environments, such as by becoming visiting scholars at top universities at home or abroad. This study adopts a mixed-method approach to investigate language teachers’ motivations for being visiting scholars. First, a questionnaire was conducted on 169 teachers who spoke both English and languages other than English (LOTEs). Following an exploratory factor analysis, six separate motivational sources were identified: internal needs, stress relief, academic positioning, academic contact, academic symbolism, and policy support. For triangulation purposes, further interviews were conducted with three visiting scholars and one supervisor for in-depth qualitative data analysis. Interview findings reveal an imbalance between high demand for visiting scholarship funding and the financial allowances granted by governments and universities. Visiting scholars also experience inadequate academic guidance from their supervisors and few opportunities to participate in supervisors’ projects. Based on the research findings, this study proposes ways to sustain teacher motivation at the macro (policy) level, the meso (tutor system) level, and the micro (individual supervision) level.