Pope Francis is one of the most famous people in the world today and he is almost as popular among the members of the Catholic church as he is among the members of other religions, atheists and agnostics around the world. His simple and kind communication, humility and open-mindedness encourage many to listen to the teaching. He often directs his messages to "all people of good will", not just Catholics and he always tries to express it in the most practical and up-to-date way possible. During his entire pontificate, the Pope promotes social values and topics of ecology, social relations, communication, fair globalization, etc. Firstly, this paper presents media ecology as a concept that studies media and communication as an environment that plays a leading role in human affairs. Secondly, this paper analyses the teachings of Pope Francis in the encyclicals Laudato si' and Fratelli Tutti and in selected speeches, letters and messages. Thirdly, the main aim of this paper is to compare the content of media ecology theorists such as Marshall McLuhan, Neil Postman, Lance Strate and Pope’s teaching. When comparing, there are many similarities in the topics of the speech of media ecology theorists and the Pope, but Pope Francis speaks from a Catholic perspective that puts God and a human being at the midpoint of teaching, while media ecology theorists put media at the centre of their speech. Despite this, Pope Francis as an influential person of nowadays, contributes to the theory of media ecology and enriches it with a new, wider perspective.