This research investigates the social function of the discourse of national anthems by applying transitivity analysis to a number of originally English-written national anthems. The qualitative method appears in the analysis of the transitivity framework while the quantitative method appears in the simplification of the new findings into numerical data. The data under investigation are regionally selected from the Encyclopedia of National Anthems (2003). The focus is on the national anthems of the Caribbean countries and the West African countries. The theory of transitivity analysis proposed by M. A. K. Halliday (2014) is used to analyze the texts under investigation. The UAM Corpus Tool 3.3x 2007 provided by Mick O' Donnell and the Antconc software 3.5.8 (2019) provided by Laurence Anthony are used in the quantitative analysis for specifying the process, the participants, and circumstances as the main constituents of the transitivity framework. It is a set of tools for the linguistic annotation of texts. The transitivity analysis tool is used to detect the different kinds of processes in the discourse under investigation. The results indicate that the discourse of national anthems is characterized by material, mental, relational, verbal, and existential processes. The most frequent type is material process of doing, followed with the relational process, the mental process, the verbal process and the existential process.