Alcaeus of Mytilene was a lyric poet from the Greek island of Lesbos who is credited with inventing the Alcaic stanza. He was included in the canonical list of nine lyric poets by the scholars of Hellenistic Alexandria. He was a contemporary of Sappho, with whom he may have exchanged poems. He was born into the aristocratic governing class of Mytilene, the main city of Lesbos, where he was involved in political disputes and feuds.

Greek lyric is the body of lyric poetry written in dialects of Ancient Greek. It is primarily associated with the early 7th to the early 5th centuries BC, sometimes called the "Lyric Age of Greece", but continued to be written into the Hellenistic and Imperial periods.