Investigating the Impacts of Modern Life Style on the Tunisian linguistic profile is, indeed, digging into the role of globalization in shaping Tunisian linguistic situation whether directly or indirectly. This research stands at the intersection of three interconnected fields of research. This multidisciplinary approach is one of the innovatory aspects of this study. The first field is critical linguistics which "focuses on the study of language within its social, political, and historical context" Tollefson (2002: 1). In this research study, language is partly investigated in its social and academic contexts as students and teachers will inform us through responding to a questionnaire about how and when they use the three main languages.The second is language policy which is interested in examining "the role of governments and other powerful institutions in shaping language use and language acquisition" Tollefson (2002: 1). The third and probably the most relevant field pertains to sociolinguistics which has recently addressed "central questions related to both the impact of globalization on language practices and their standardization" Duchene (2009: 27).