In Optimality Theory (ОТ ; Prince & Smolensky 1993), linguistic structures emerge from grammatical constraints interaction which assigns to the standard notions of markedness, marked structure, unmarked structure and implicational markedness a precise formal status. This conception is explored in the domain of Prosodie Morphology. The article presents first the basics of the analysis, then formal descriptions of syllabic and morphological aspects of reduplicative patterns. Finally, the theory is tested on the analysis of apparently complex morphophonological dependencies in the reduplicative pattern of Makassarese, an Austronesian language.Mc Carthy J., Prince Alan S. L'émergence du non-marqué. L'optimalité en morphologie prosodique. In: La...