Eleftheria Arvanitaki (Greek: Ελευθερία Αρβανιτάκη) (born October 16, 1957 in Piraeus) is a Greek folk singer. She originates from the island of Icaria. On 14 March 2010, Alpha TV ranked Arvanitaki the sixth top-certified female artist in the nation's phonographic era (since 1960).
Arvanitaki started her career in singing in 1980, by joining the group "Opisthodromiki Kompania" / "Οπισθοδρομική Κομπανία" (Retrograde Company) and in 1981 she had her first guest appearance on a CD, by being featured in the album of Vangelis Germanos titled "Ta Barakia". She broke away from the group and started a solo career in 1984 with her album Eleftheria Arvanitaki.
In August 2004 she participated in the closing ceremony of the Athens Olympics.
She has performed in several WOMAD and other festivals. In 2006 she took part in the Christmas concert "Frostroses" in Reykjavik, Iceland as a part of a group of singers named "European Divas".