Character strengths, representing positive attributes of individuals, have been linked with several positive psychological qualities, such as life satisfaction and well-being. However, the effects of character strengths and their deployment on married couples, at the dyadic level, have not been studied to date. The present study focuses on married partners’ strengths endorsement and on their opportunities to deploy their strengths in the relationship, and explores the associations between these variables and both partners’ relationship satisfaction. The results reveal significant associations of strengths endorsement and deployment with relationship satisfaction, as expected. However, unexpectedly, men’s idealization of their wives’ character strengths was negatively associated with relationship satisfaction. These findings hold theoretical and practical implications for couples and therapists, regarding dyadic effects of strengths endorsement and deployment, and their perception.