While highlighting the particularities of Beckett's and Pinter's theater, this study shows the very close link between these two dramatic worlds. They are different from the point of view of form, but remain intimately linked in terms of substance. Indeed, Beckett and Pinter give concrete form to the anguish of the disenchanted man of the post-war period. What is interesting to note is the profound similarity in the expression of existential malaise that the two authors engage in, even if their dramatic approaches are very different. The author concludes that Beckett's and Pinterne's theaters are but two sides of the same coin.