Although 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.