Peter II (Serbo-Croatian: Petar / Петар) was the last King of Yugoslavia, and the last reigning member of the Karađorđević dynasty which came to prominence in the early 19th century.
Peter II was the eldest son of Alexander I and Maria of Romania; his godfather was British king George V of the United Kingdom.
When he was 11 years old, Prince Peter succeeded to the Yugoslav throne in 1934 upon the assassination of his father King Alexander I in Marseille during a state visit to France. In view of the new monarch's young age, a regency was set up under his father's cousin Prince Paul.
He was deposed by Yugoslavia's Communist Constituent Assembly on 29 November 1945. After that, he settled in the United States.