The Kingdom of Naples, comprising the southern part of the Italian Peninsula, is the remainder of the old Kingdom of Sicily after the secession of the island of Sicily as a result of the Vespers of 1282.

It continues to be officially known as the Kingdom of Sicily, although it no longer includes the island of Sicily.

For much of its existence, the realm is contested between French and Spanish dynasties.

From 1504–1715, the kingdom is in a personal union of the Kingdom of Spain.