The Technological Educational Institute of Ionian Islands (TEI ION; Greek: Τεχνολογικό Εκπαιδευτικό Ίδρυμα (Τ.Ε.Ι.) Ιονίων Νήσων) was a fully self-governing higher-educational institute under state supervision, exercised by the Minister of National Education and Religious Affairs. The institute was based in Argostoli on the island of Kefalonia, with satellite campuses in Lixouri, Lefkada and Zakynthos. The Technological Educational Institute offered also postgraduate courses in collaboration with other universities in Greece and abroad. In 2018 the TEI of Ionian Islands merged into Ionian University.