Islamic moderateness is said to be one of the key factors that contribute to the promotion of peace in Muslim societies. We present an empirical study conducted in Indonesia that assessed Islamic political moderateness and examined its role in explaining Muslims’ tolerance towards non-Muslims, as well as the first group’s support for making reconciliation with the latter group. We found as hypothesised that Islamic political moderateness was a positive predictor of outgroup tolerance, because of the role it had in positively (...) predicting the sense of national identity as a higher order identity vis-à-vis Islamic identity. Outgroup tolerance positively predicted and, in turn, fully mediated the positive association between Islamic political moderateness and Muslims’ reconciliatory tendencies, including feelings of collective guilt and shame, intergroup trust and perspective-taking, intergroup cooperation, willingness to apologise, as well as support for intergroup empowerment and reparative actions. These findings suggest the benefit of Islamic political moderateness to drive Muslims to appreciate the existence of non-Muslims. We discuss these empirical findings in terms of theoretical implications, research limitations and practical implications. (shrink)