AbstractLower socioeconomic position is associated with increased risk of coronary heart disease. This robust gradient is found across levels of socioeconomic position and after controlling access to health care and traditional biological and behavioral risk factors. Thus, previous theory and research has examined the role of other, relatively static psychosocial factors (e.g., social isolation and negative emotional traits) that may account for this association. Utilizing an interpersonal perspective on psychosocial risk (Smith & Cundiff, ; Smith, Gallo, & Ruiz, ; Smith, Glazer, Ruiz, & Gallo, ), this review examines the role of recurring interpersonal experiences and their physiological effects as a pathway linking socioeconomic position and coronary heart disease. Specifically, we focus on proximal interpersonal experiences that may not only explain the increased prevalence of more chronic psychosocial vulnerabilities in lower socioeconomic environments and individuals but may also link those psychosocial vulnerabilities to the momentary physiological mechanisms (i.e., stress responses) that directly contribute to coronary heart disease. Recurring experiences of reduced support and increased conflict in important personal relationships, work stress, multiple aspects of interactions with higher‐status others, the effects of negative stereotypes about lower socioeconomic groups and individuals, greater use of suppressive strategies for emotion regulation and greater negative consequences for more direct and expressive social behavior, and greater engagement in perseverative cognition all plausibly combine to perpetuate psychosocial risk and produce overall greater physiological burden at lower levels of socioeconomic position.