Close relationships are essential for feelings of security, which in turn allow humans tophysiologically down regulate and fall asleep and stay asleep. Parents and adolescents likely jointly generate a sense of interpersonal security. In order to account for dependency, actor-partner modeling was used to examine how adolescents’ perception and their parents’ perception of the relationship simultaneously and independently relates to each other’s sleep health. I examined how both parents’ and adolescents’ perception of parental involvement and parent-adolescent conflict associated with both their own and each other sleep duration, sleep quality, and daily rhythmicity. Twenty-eight dyads completed a relationship questionnaire and a 10-day sleep diary. Findings suggested that parents and adolescents have diverging thoughts and beliefs about the degree of closeness and conflict within their relationship, which, in turn are independently associated with sleep outcomes. More specifically, one’s own perception of parental involvement appeared to benefit both parents and adolescents’ sleep. Moreover, when parents reported more conflict with their adolescents, both parents and adolescents had shorter sleep durations.