Anxious youth typically experience sleep-related difficulties, but little is known about the role children's coping and perceived control over anxiety may play in these relations. We examined children's perceived levels of control over external anxiety-provoking events and internal anxious emotional reactions, as well as two dispositional coping tendencies (avoidant, support-seeking), and whether these were associated with anxious children's (N = 86) presleep arousal. Low perceived control over anxiety was significantly associated with high levels of presleep arousal. For children with low perceived control, higher avoidance was associated with greater presleep arousal, whereas lower avoidance was associated with lower presleep arousal levels. Findings suggest that efforts to avoid stressful life events may contribute to presleep arousal, especially under conditions where anxious arousal seems uncontrollable.