Starnberg (German pronunciation: [ˈʃtaʁnbɛʁk] ) is a town in Bavaria, Germany, some 30 kilometres (19 mi) southwest of Munich. It is at the north end of Lake Starnberg , in the heart of the "Five Lakes Country", and serves as capital of the district of Starnberg. Recording a disposable per-capita income of €26,120 in 2007, Starnberg regained its status as the wealthiest town in Germany.

The town was first mentioned in 1226 under the name of Aheim am Würmsee. Würmsee (Lake Würm, after the river of the same name) was the official name of Lake Starnberg until 1962.

The founding of Starnberg Castle is attributed to the Counts of Andechs and dates back to the 11th century.