This study used a multidimensional assessment of interpersonal power to examine associations between indices of relationship power and relationship functioning in 92 adolescent romantic couples recruited from rural communities in the Rocky Mountain region of the United States. Significant differences emerged between girlfriends and boyfriends in their reports of decision making authority, perceptions of humiliating behaviors by the partner, and ratings of themselves giving-in to their partners in a videotaped interaction task. In addition, indices of interpersonal power were associated with dating aggression and relationship satisfaction for both girlfriends and boyfriends, although gender differences emerged in the patterns of association between power and outcomes. Results are discussed in light of current developmental, feminist, and social psychological theories of interpersonal power in romantic relationships.