?he CLIL (Content and Language Integrated Learning) approach has been proposed as an effective approach for students' education in the 21st century. Although it was initially proposed for students of higher education, CLIL has become especially attractive for students even in pre-school education. This paper focuses on the importance of CLIL implementation in fostering intercultural competencies among students who are engaged in CLIL programs. More specifically, this paper covers a theoretical review on CLIL and its development, while special emphasis is placed on the position of CLIL in the priorities of the European Council within the context of promoting multilingualism in Europe. CLIL aligns itself with the European Language Policy of improving language learning in its member states and with the EU Commission's objective of EU citizens' competence in European languages other than learners' mother tongue. The paper ends with references to organizations that promote the implementation of CLIL across Europe, while special emphasis is placed upon CLIL in Greek education.