Penelope (/pəˈnɛləpi/ pə-NEL-ə-pee; Ancient Greek: Πηνελόπεια, Pēnelópeia, or Πηνελόπη, Pēnelópē) is a character in Homer's Odyssey. She was the queen of Ithaca and was the daughter of Spartan king Icarius and Asterodia. The mythological Penelope is known for her fidelity to her husband Odysseus, despite the attention of more than a hundred suitors during his absence. In one source, Penelope's original name was Arnacia or Arnaea.

Glossed by Hesychius as "some kind of bird" (today arbitrarily identified with the Eurasian wigeon, to which Linnaeus gave the binomial Anas penelope), where -elōps (-έλωψ) is a common Pre-Greek suffix for predatory animals; however, the semantic relation between the proper name and the gloss is not clear. In folk etymology, Pēnelopē (Πηνελόπη) is usually understood to combine the Greek word pēnē (πήνη), "weft", and ōps (ὤψ), "face", which is considered the most appropriate for a cunning weaver whose motivation is hard to decipher. Robert S. P. Beekes believed the name to be Pre-Greek and related to pēnelops (πηνέλοψ) or pēnelōps (πηνέλωψ).

Penelope is married to the main character, the king of Ithaca, Odysseus (Ulysses in Roman mythology), and daughter of Icarius of Sparta and Periboea (or Polycaste). She has only one son with Odysseus, Telemachus, who was born just before Odysseus was called to fight in the Trojan War. She waits twenty years for Odysseus's return, during which time she devises various cunning strategies to delay marrying any of the 108 suitors (led by Antinous and including Agelaus, Amphinomus, Ctessippus, Demoptolemus, Elatus, Euryades, Eurymachus and Peisander).

On Odysseus's return, disguised as an old beggar, he finds that Penelope has remained faithful. She has devised cunning tricks to delay the suitors, one of which is to pretend to be weaving a burial shroud for Odysseus's elderly father Laertes and claiming that she will choose a suitor when she has finished. Every night for three years, she undoes part of the shroud, until Melantho, a slave, discovers her chicanery and reveals it to the suitors.

Penelope's efforts to delay remarriage is often seen as a symbol of marital fidelity to her husband, Odysseus. But because Athena wants her "to show herself to the wooers, that she might set their hearts a-flutter and win greater honor from her husband and her son than heretofore", Penelope does eventually appear before the suitors.

Irene de Jong wrote:

 As so often, it is Athena who takes the initiative in giving the story a new direction ... Usually the motives of mortal and god coincide, here they do not: Athena wants Penelope to fan the Suitors' desire for her and (thereby) make her more esteemed by her husband and son; Penelope has no real motive ... she simply feels an unprecedented impulse to meet the men she so loathes ... adding that she might take this opportunity to talk to Telemachus (which she will indeed do).

It is important to consider the alternate perspective of Penelope entertaining, and even enjoying the attention of, her suitors. Italian philosophy historian Giula Sissa offers a unique perspective which supports this idea. The Odyssey allows room for Penelope’s identity free of being Ulysses's wife. As she awaits his return, she makes a plan to deal with her suitors while also responding to her desires. Sissa discusses how Penelope gives her suitors the opportunity to demonstrate themselves as the best candidate for her attention. Sissa writes,