Mindfulness is a hot topic in psychological research and the popular media. One central claim in the literature is that enhanced mindfulness fosters prosocial behavior. This article recapitulates what is currently known about this widespread claim. We first review theoretical perspectives on why enhanced mindfulness should foster prosocial behavior and discuss relevant empirical evidence. Two meta-analyses provide preliminary support for this claim. However, limitations call for caution when interpreting the evidence and studies investigating effects that persist over sustained periods of time are missing. In addition, theoretical assumptions about the underlying mechanisms need stronger empirical support. We discuss theoretical predicaments, identify potential downsides of mindfulness, and suggest ways forward for future research.