Hitis (Finnish: Hiittinen) is a small archipelago and a former municipality in Finland.

It lies south from Kimitoön in the province of Southwest Finland.

In total there are more than 2000 islands and islets in Hitis, and some of them are still inhabited permanently.

During World War II, the battles of Bengtskär and Morgonlandet took place within Hitis.

Bergö, Biskopsö, Bolax, Böle, Hitis, Holma, Högsåra, Kaxskäla, Kasnäs, Rosala, Stubbnäs, Tunhamn, Vänoxa, Vänö