Gia 'sena ton agnosto (Greek: Για 'σένα τον άγνωστο; For you, the unknown) is the name of a studio album by popular Greek singer Marinella. It was released on September 27, 1983, by PolyGram Records in Greece and it went gold selling over 50,000 units. The album is entirely composed by Giorgos Hatzinasios, with lyrics by Michalis Bourboulis. The original release was in stereo on vinyl and cassette, under the label of Philips Records. In 1996, the album was released on CD by PolyGram, under the label of Mercury Records.