AbstractObjectiveIntellectual humility (IH) refers to the recognition that personal beliefs might be wrong. We investigate possible interpersonal implications of IH for how people perceive the intellectual capabilities and moral character of their sociopolitical opponents and for their willingness to associate with those opponents.MethodIn four initial studies (N = 1,926, Mage = 38, 880 females, 1,035 males), we measured IH, intellectual and moral derogation of opponents, and willingness to befriend opponents. In two additional studies (N = 568, Mage = 40, 252 females, 314 males), we presented participants with a specific opponent on certain sociopolitical issues and several social media posts from that opponent in which he expressed his views on the issue. We then measured IH, intellectual, and moral derogation of the opponent, participants' willingness to befriend the opponent, participants' willingness to “friend” the opponent on social media, and participants' willingness to “follow” the opponent on social media.ResultsLow‐IH relative to high‐IH participants were more likely to derogate the intellectual capabilities and moral character of their opponents, less willing to befriend their opponents, and less willing to “friend” and “follow” an opponent on social media.ConclusionsIH may have important interpersonal implications for person perception, and for understanding social extremism and polarization.