Co-speech hand gestures offer a rich avenue for research into studying emotion communication because they serve as both prominent expressive bodily cues and an integral part of language. Despite such a strategic relevance, gesture-speech integration and interaction have received less research focus on its emotional function compared to its cognitive function. This review aims to shed light on the current state of the field regarding the interplay between co-speech hand gestures and emotions, focusing specifically on the role of gestures in (...) expressing and understanding both others’ and one's own emotions. The article concludes by addressing current limitations in the field and proposing future directions for researchers investigating gesture-emotion interaction. Our goal is to provide a roadmap to researchers in their exploration of the role of gestures in emotions, ultimately contributing to a more comprehensive understanding of how gestures and emotions intersect. (shrink)