Trikeri (Greek: Τρίκερι, Tríkeri) is a town and a former community in Magnesia, Thessaly, Greece.

The municipal unit has a total population of 992 inhabitants (2021 census),[1] and a land area of 26.817 square kilometres (10.354 sq mi).

[3] Its largest settlements are the towns of Trikeri and Agia Kyriaki (Greek: Αγία Κυριακή), both on the mainland.

From 1947 the island of Trikeri was used as a concentration camp for female left-wing political prisoners during the Greek Civil War.

The women and children were relatives of members of the EAM-ELAS, the resistance forces which had fought against fascist occupation during World War II.