This study explored the role that relationship strength, generally, and emotional closeness, more specifically, may play in delimiting the bounds of grandparental influence in young adults' lives. One-hundred and seventy-one college-aged young adults completed a questionnaire evaluating their relationship with the living grandparent to whom they felt most emotionally close or, if they felt close to none of their living grandparents, the grandparent with whom they had the most contact. Participants' perceptions of the strength of this relationship were significantly and positively related to their responses on measures of the extent to which their closest grandparent influenced various aspects of their lives (e.g., their beliefs and values, how much their lives would be missing had they never known the grandparent). In addition, participants whose grandparent-grandchild relationships were emotionally close endorsed a broader range of alternatives on checklist measures of perceived relationship impact than did those whose relationships were more emotionally distant.