Using a novel theoretical framework that incorporates teacher identity, a school as community of practice, and English as a global language from a linguistic-imperialism perspective, this qualitative interview study with foreign-language teachers in Scotland, France, and Germany (N = 13) explores connections between foreign-language-learning decline and the impact of this decline on teachers' identity across the three countries. Findings indicate similar trends across contexts in the dominance of English over other languages (and the identities of those who teach them) and support previous research on the importance of considering subject area, and its valuing by a range of stakeholders, as fundamental to teacher identity. Directions are proposed for future research and practice that emphasise taking an interdisciplinary approach to the notion of a subject area's decline.