Dialogue and argumentation are two processes that complement and mutually influence each other. However, this essential relationship is not sufficiently acknowledged by current educational research. This neglected relation is also mirrored by the lack of sufficient dialogue between two fields that are defined by the dialogical approach to education and argumentation, namely dialogic pedagogy and educational argumentation. In this Special Issue, we argue that dialogue pedagogies and argumentation theory and practice should communicate more, bridging their somehow different perspectives for the common goal of engaging learners in productive and constructive discussions.