The usefulness of ICT in language learning is unquestionable nowadays. There are many digital educational resources available for foreign and second language teachers, materials which are progressively acquiring an important role in the teaching-learning process. In order to respond to the increasing presence of such technologies in the classroom, teachers need to acquire digital and media competences, two key elements for lifelong training process. However, these are superficially addressed in teacher education. In this light, both in-training and in-service educators demand more skills and specific training to be able to teach students how to use technologies and, ultimately, help them develop their own digital and media competences. Following an exhaustive bibliographical revision of scientific literature in the field, this theoretical paper seeks to revise the concepts of digital and media competences as well as to reflect on how superficially they are addressed at universities and teacher-training centres. After this, the importance of both competences as key elements for teachers is brought to light, as well as some useful suggestions to help foreign and second language teachers acquire and develop them and, simultaneously, teach them to their students.