International Association for Relationship Research

The International Association for Relationship Research (IARR) is an international, interdisciplinary learned society dedicated to promoting research on personal relationships. It was formed in 2004 from the merger of the International Network on Personal Relationships (INPR) and the International Society for the Study of Personal Relationships (ISSPR). Its official peer-reviewed journals are Personal Relationships and the Journal of Social and Personal Relationships. IARR also sponsors the Advances in Personal Relationships book series and publishes a newsletter called Relationship Research News.

Organizational aims
IARR proclaims a commitment to diversity, equity, and inclusion and also to expanding access to researchers and research populations beyond Western, Educated, Industrialized, Rich, Democratic (WEIRD) nations, as a way of better understanding relationship processes. According to the organization's website (as of May 8, 2024), "it is imperative that the experiences of diverse people and relationship styles and structures are understood through the lens of a myriad of cultures and disciplines." The organization further states that, "Geographical, linguistic, and cultural diversity are essential for understanding how interpersonal relationships are experienced across the globe."