Mestrius Plutarchus (c. 46 – 119 AD), more generally known as Plutarch, was a Greek biographer and historian who produced an impressive 227 works. His most important is Parallel Lives.

Although he wrote of Atlantis (Solon 32.1-2) as if an historical fact, he does imply that Plato embellished the basic story. Plutarch also recorded that Solon learned the story of Atlantis from Psenophis of Heliopolis and Sonchis of Sais (Solon 26.1).

He also mentions Saturnia as being around five days sailing west of Britain and added that westwards from that island, there were the three islands to where proud and warlike men used to come from the continent beyond the islands, in order to offer sacrifice to the gods of the ocean. Commentators have seen this as a possible reference to Atlantis or even America.