Tremiti (Italian: Isole Tremiti) is an archipelago of the Adriatic Sea, north of the Gargano Peninsula. It constitutes a comune of Italy's Province of Foggia, and forms part of the Gargano national park (Parco Nazionale del Gargano); the name of the islands is linked to their increased seismic hazard, with a history of earthquakes - the source word tremolanti is linked to tremors.

A view of San Domino Island.

The islands were used for the internment of political prisoners during Benito Mussolini's Fascist regime. This was not exactly a novelty: two millennia earlier Augustus had sent his granddaughter Julia the Younger in exile to one of these islands (then named Trimerus).

The islands are now an important tourist attraction - due to the clear waters surrounding them.