Psomi () is a Greek islet close to the island of Kastellorizo. It is part of the municipality of Kastellorizo. Its area is 0.0035 km<sup>2</sup>, and according to the 2021 Greek population census, it didn't have any residents.
Psomi is the only place in Greece where the lizard Anatololacerta finikensis has been found. Kotschy's gecko was also discovered in the island.