The paper deals with the theory of gesture from the point of view of relational sociology. On the one hand, the thesis of the ‘complete gesture’ developed by Giovanni Maddalena is appreciated as a significant step forward from classical pragmatism. On the other hand, since theories based essentially on phenomenology and semiotics are at risk of nominalism and constructivism, if we want to understand the gesture from a critical realistic perspective, we need to complement the theory of gesture with a (...) relational social ontology. This means that the theory of the gesture as action (unit act) must be placed within an ontological and epistemological framework, in which Peirce’s triangle is related to the latent value of the real as indicated by the sign. A relational alternative to Peirce's semiotic triangle is presented here with the aim of connecting the sign of the gesture to the underlying reality. (shrink)