This chapter discusses the concept of intersubjectivity and its relation to dialogue. It argues that intersubjectivity is hardly a monolithic notion, but rather a family of related concepts, and elaborates on various forms and aspects of intersubjectivity in both wider philosophical contexts and more local empirical contexts. Many scholars have argued that intersubjectivity necessarily presupposes subjectivity as a more basic notion, a position which is associated with classical phenomenology. Intersubjectivity is a multi-faceted phenomenon, and a multi-ambiguous term. It is not a specific, easily localisable phenomenon, nor a precise descriptive notion. In a truly dialogical approach to human sense-making, interactivities are arguably more basic than intersubjectivities. As regards intersubjectivity, partial rather than complete types are the canonical cases. Both interactivity and intersubjectivity can take many forms. Intersubjectivity, imbued as it is with linguistic aspects, should be seen as a central dimension of being in the world.