The European Union defines lifelong learning as all activities aimed at improving an individual's knowledge, skills and competences individually, socially or vocationally throughout his/her life. In 2007, eight key competences necessary for lifelong learning were identified by the European Union Education and Culture Commission. These competences are communication in the mother tongue, communication in foreign languages, mathematical competence and basic competences in science and technology, digital competence, learning to learn, social and civic competences, sense of initiative and entrepreneurship and cultural awareness and expression. The main purpose of this research is to determine the key competence levels of postgraduate students in lifelong learning. It was concluded that lifelong learning competences of the graduate students participating in the study were high. Moreover, the graduate students considered themselves best at the native language communication competence, while the lifelong learning key competence at which they considered themselves worst was foreign language communication competence.