The main objective of the generative theory particularly the transformational generative grammar is to present a grammar that will serve as a mechanism for explaining the syntactic phenomenon in all human languages while also taking into cognisance their areas of similarities as well as aspects of divergences. It is in this line of thought that this paper examined the transformational rules that apply to the syntactic phenomenon of pronominalisation in the French and Igbo languages with focus more on that of Igbo language. It specifically studied syntactic operations involved in the process of pronominalisation in the two languages in order to highlight the aspects that are universal to the two languages as well as their areas of divergences. It also noted certain syntactic traits peculiar to each language, more so as both languages belong to two different language families. The study therefore revealed that the phenomenon of pronominalisation in Igbo involves the replacement of certain categories of grammatical elements but does not necessarily entail movement of these elements as in the case of French language where it involves both replacement and movement particularly in the case of personal pronoun complements.