This article seeks to examine the perception of the EFL/ESL teachers on environmental education and the integration of environmental education in language teaching. The hope of the article is that it will enable Cameroon EFL/ESL teachers to discover or rediscover the aims and extended reach of their profession. That is, that EFL/ESL teaching should not only be limited to the improvement of learners' language proficiency but also to enable them develop critical thinking strategies that can be useful in environmental sustainability; that the English language teaching profession can be used in promoting environmentally friendly behaviours among citizens, thereby activating an eco-applied linguistic awareness among Cameroonian EFL/ESL teachers.