In Greek mythology, Clio ( /ˈklaɪ.oʊ/; Greek: Κλειώ) or Kleio, is the muse of history. Like all the muses, she is a daughter of Zeus and Mnemosyne. She had one son, Hyacinth, with one of several kings, in various myths - with Pierus, King of Macedon, or with king Oebalus of Sparta, or with king Amyclas, progenitor of the people of Amyclae, dwellers about Sparta. Some sources say she was also the mother of Hymenaios.
She is often represented with a parchment scroll or a set of tablets and is also known as the Proclaimer. The name is from the root κλέω/κλείω,("recount" or "make famous").
'Clio' represents history in some coined words: cliometrics, cliodynamics.