List of governors and heads of state of Fiume

Territory of the corpus separatum before 1918.
Territory of the Free State from 1920 to 1924.
Territory of the Province of Fiume, 1924.

This is a list of governors of the Corpus separatum of Fiume (formally known as City of Fiume and its district), heads of state of the Free State of Fiume and prefects of the Province of Fiume (now modern Rijeka and its surrounding area, in Croatia).