Romulus Augustus (461 – 476), sometimes known as Romulus Augustulus (Little Augustus), was the last Western Roman Emperor reigning from 31 October 475 to 4 September 476. His deposition in 476 is used to mark the end of the Western Roman Empire, the fall of ancient Rome, and the beginning of the Middle Ages in Europe.

The historical record contains few details of Romulus' life. He was installed as emperor by his father Orestes, the Magister militum (master of soldiers) of the Roman army. Orestes had deposed the previous emperor Julius Nepos. Romulus, little more than a child, acted as a figurehead for his father's rule. Reigning only ten months, Romulus was then deposed by the Germanic chieftain Odoacer and sent to live in the Castellum Lucullanum in Campania; afterwards he disappears from the historical record.