Aspasia (/æˈspeɪziə/ or /æˈspeɪʒə/; Ancient Greek: Ἀσπασία; ca. 470 BC–ca. 400 BC) was a Milesian woman who was famous for her involvement with the Athenian statesman Pericles. Very little is known about the details of her life. She spent most of her adult life in Athens, and she may have influenced Pericles and Athenian politics. She is mentioned in the writings of Plato, Aristophanes, Xenophon, and other authors of the day.

Ancient writers also reported that Aspasia was a brothel keeper and a harlot, although these accounts are disputed by modern scholars, on the grounds that many of the writers were comic poets concerned with defaming Pericles. Some researchers question even the historical tradition that she was a hetaera, or courtesan, and have suggested that she may actually have been married to Pericles. Aspasia had a son by Pericles, Pericles the Younger, who later became a general in the Athenian military and was executed after the Battle of Arginusae. She is believed to have become the courtesan of Lysicles, another Athenian statesman and general, following the death of Pericles the Elder.