Together with increased economic and political openness, a location’s or territory’s attractiveness and competitiveness for foreign direct investment (FDI) are key elements for intensifying investment and trade flows.For countries, especially those without a national market of significant scale, establishing a way to identify and analyse priorities for economic development is fundamental.This research defines a general analytical framework applicable to the concepts of attractiveness and competitiveness, and, building on this framework, develops a specific model that could assist key institutions as to identify their preferred orientations in the specific context of an economy considered as a small open mature economy (SOME), in particular, Luxembourg.This research will lead to the definition of a prospective structured approach by:- providing a list of factors which potentially influence the competitiveness and attractiveness of SOMEs; this list having been validated with respect to Luxembourgby national decision makers;- establishing a method for analysing the current situation regarding attractiveness and competitiveness in Luxembourg; and- identifying priority sectors for FDI that could be targeted in a specific location/territory of reference such as Luxembourg. ; L’attractivité des territoires vis-à-vis des investissements directs étrangers constitue, avec l’ouverture accrue des espaces économiques et politiques, un élément clé de l’intensification des flux d’échanges et d’investissements.Pour tous les pays et, plus particulièrement, pour ceux ne disposant pas d’un marché national important, l’établissement d’un diagnostic d’attractivité et la détermination d’axes prioritaires de développement constituent une démarche fondamentale applicable particulièrement à l’exemple du Luxembourg, une économie considérée comme une petite économie mature ouverte (PEMO).A travers cette recherche, on s’attachera à appliquer et à adapter un modèle d’analyse des fondements de l’attractivité, puis un modèle de détermination ...