Marcus Vipsanius Agrippa (; c. 63 BC – 12 BC) was a Roman general, statesman, and architect who was a close friend, son-in-law, and lieutenant to the Roman emperor Augustus. He was responsible for the construction of some of the most notable buildings in history, including the original Pantheon, and is well known for his important military victories, notably the Battle of Actium in 31 BC against the forces of Mark Antony and Cleopatra.