This report summarizes the main findings of a survey on language and internationalisation conducted during the Spring semester of 2021 by the Doctoral Board (Doktorandnämnden, DN) of Uppsala University. This initiative is a consequence of the 2019 Uppsala University Doctoral Education Survey (https://uudoctoralboard.se/docs/the-uppsala-university-doctoraleducation-survey-2019/) conducted by DN, which identified language issues as highly significant for PhD students at the University.