Attachment styles can predict the quality of organisational relationships, particularly in reference to Leader Member Exchange (LMX). However, there is much work to be done in articulating and summarising these findings and in detecting gaps in the literature. This systematic review fills a critical niche by providing a review of the attachment/LMX relationship. Using the PRISMA framework, this review integrates research on attachment styles and LMX by evaluating associations between secure, anxious, and avoidant attachment styles with LMX for leaders and followers. Across ten studies, we review the evidence for associations between leader and follower attachment and LMX. We seek to investigate if secure attachment is associated with high-quality LMX and if insecure attachment is associated with lower quality LMX. Our review in general provides mixed support for these propositions, although the association of avoidant attachment for followers with LMX received consistent support. Furthermore, our results highlight the need to consider potential moderating and mediating factors within the attachment/LMX relationship. Based on the patterns of these relationships and the methodological gaps in the literature, we discuss the managerial implications for attachment styles in work and organisational psychology and suggest several directions for future research on the attachment-LMX relationship.