Existing interpersonal mindfulness measures have either been specific to a certain context (e.g., parenting, conjugal, teaching) or omitted/minimized the role of the body in the interpersonal dynamic. The Interpersonal Mindfulness Questionnaire (IMQ) aims to operationalize interpersonal mindfulness as an embodied set of skills that are applicable to all interpersonal dynamics. Based on the theoretical notion of embodied and embedded mindfulness, the IMQ operationalizes interpersonal mindfulness in four different dimensions, each representing a set of skills or abilities that can be cultivated through training and practice. These dimensions are: (1) Detachment from the Mind, (2) Body Anchored Presence, (3) Attention to and Awareness of the Other Person, and (4) Mindful Responding. Graduate students and mindfulness experts contributed to the development of the IMQ’s items, which were assessed in two studies. The final version has four dimensions, and our findings suggest these subscales are independent, sensitive to meditation practice or experience, and associated with better intrapersonal and interpersonal outcomes. Implications, limitations, and the scoring of the IMQ subscales are discussed in this chapter.