Although there is a large body of research and several recommendations for psychologists working with patients undergoing therapy in a foreign language, less attention has been given to therapists who themselves work using a foreign language. Yet, in today's global world, mobility oftentimes entails psychologists performing their professional duties abroad using a foreign language (e.g., when migrating to another country where the majority language is different from their native language, international work with Doctors Without Borders). For those therapists, language can become a barrier and additional challenge, especially when speaking the foreign language is accompanied by linguistic insecurity. The aim of this study is thus to investigate how licensed clinical psychologists using a foreign language at work experience the meeting with their patients and the professional exchanges with their colleagues. Semistructured interviews will be conducted to understand the linguistic insecurity of psychologists speaking Swedish as a foreign language in Sweden and how it affects their perceived capacity to perform their work adequately, their professional related confidence, and their mental health. Participants will stem from diverse backgrounds in terms of the country where they obtained their professional education, their career stage, age, gender, and year of arrival in Sweden. Data collection will continue until data saturation is reached, after which a thematic analysis will be performed. The results of this study will provide crucial insights into the psychological well-being of clinical psychologists providing their services in a foreign language context, which is an area that has received little attention in research until now. Data collection and analysis will be completed by the spring of 2023.