AbstractAlthough emotions are vitally important for achievement and performance in learning a new language, prior research has mainly focused on negative emotions and the cognitive aspects of second language acquisition and foreign language learning. However, the number of studies on the relationship between positive psychology and language learning has increased since 2014. Nevertheless, research is still inconclusive. This study, using a systematic scoping review, aims to analyse and synthesise the studies on the relationship between positive psychology and of second language acquisition and foreign language learning to present implications for practice and future research. It concludes that the use of positive psychology elements effectively enhances foreign language enjoyment, decreases foreign language anxiety, and develops basic language skills. In light of the conclusions reached, implications for practice and further research are presented. Context and implications Rationale for the study Emotions are vital for performance and achievement in the second language acquisition and foreign language learning processes. However, research on these processes has mainly focused on negative emotions and the cognitive aspects until 2014. Although the number of studies has significantly increased after 2014, the results are inconclusive in gaining insight and shaping practice and future research. Why do the new findings matter? The findings in the study are significant for positioning the elements of positive psychology in second language acquisition and foreign language learning and may lead to the emergence of a novel language learning approach. Implications for researchers, teachers, and policy makers Researchers should focus on the relationships between positive psychology and language learning in different cultures and educational and instructional contexts. Language teachers need to attach importance to the mediating role of positive psychology in their classes. To achieve this, they should collaborate with school counsellors. Last, curriculum developers and policy makers should integrate and implement positive psychology elements into the pre‐service and in‐service teaching programmes.