The High School of Kassiopi (Γυμνάσιο Κασσιόπης με Λυκειακές Τάξεις), also known as Lyceum of Kassiopi or Gymnasio of Kassiopi, is a state-run public high school in the town of Kassiopi on the affluent north-east coast of Corfu, Greece.

The school has a non-selective intake, admitting boys and girls between the ages of 11 and 18.

It provides both stages of Greek secondary education comprising both a gymnasio (junior/middle high school) and a general lykeion.

It is located above the harbour of Imerolia in the western part of Kassiopi.

[1] The school is often the target of public dispute in the area due to its short supply of teachers and yearly school lockdowns by the students themselves.