Anactoria (or Anaktoria) (Ancient Greek: Ἀνακτορία) is a woman mentioned in the work of the ancient Greek poet Sappho. Sappho, who wrote in the late seventh and early sixth centuries BCE, names Anactoria as the object of her desire in a poem numbered as fragment 16. Another of her poems, fragment 31, is traditionally called the "Ode to Anactoria", though no name appears in it. As portrayed by Sappho, Anactoria is likely to have been an aristocratic follower of hers, of marriageable age. It is possible that fragment 16 was written in connection with her wedding to an unknown man. The name "Anactoria" has also been argued to have been a pseudonym, perhaps of a woman named Anagora from Miletus, or an archetypal creation of Sappho's imagination.
The English poet Algernon Charles Swinburne's "Anactoria" was published in his 1866 collection, Poems and Ballads. In "Anactoria", Sappho addresses the title character in a long monologue written in rhyming couplets of iambic pentameter. The monologue expresses Sappho's lust for her in sexually explicit terms; she first rejects art and the gods for Anactoria's love before reversing her stance and claiming to reject Anactoria in favour of poetry. Swinburne's poem created a sensation by openly approaching then-taboo topics such as lesbianism and dystheism. Anactoria later featured in an 1896 play by H. V. Sutherland and in the 1961 poetic series "Three Letters to Anaktoria" by Robert Lowell, in which an unnamed man loves her before transferring, unrequitedly, his affections to Sappho.