The authors in this volume study various facets of the long-term coexistence of French and English with native languages in Cameroon. This coexistence has many linguistic, educational and political implications. The data analyzed in the papers are collected through various methods and from various sources: questionnaires, interviews, participant observation, online sources, social media, written documents, recorded speeches and informal conversations, etc. Les auteurs de ce volume etudient sur plusieurs facettes la coexistence de longue date entre le francais, l'anglais et les langues maternelles au Cameroun. Cette cohabitation offre beaucoup d'implications linguistiques, educatives et politiques. Les donnees analysees par les differents contributeurs ont ete collectees au moyen de methodes et sources diverses : questionnaires, interviews, observations participantes, sources internet, reseaux sociaux, documents ecrits, discours enregistres et conversations informelles, etc.