- January 16 - The Roman Senate votes Octavian the title of Augustus. He accepts this honor, having declined the alternative title of Romulus. He is known as Augustus afterwards.
- Augustus becomes consul for the seventh time. His partner Marcus Vipsanius Agrippa becomes consul for the third time.
- Augustus, as consul, returns power to the Senate of Rome.
- Augustus starts a new military reform
- Marcus Terentius Varro, Roman scholar