"Mystiko" (Greek: Μυστικό; "Secret") is a single by the Greek singer Peggy Zina. It was released on July 9, 2007 by Minos EMI. It has also been repackaged with Zina's album Ena and sold as Ena New Edition.
The song "Mystiko" was written for her wedding, where she sang the song to her husband at the reception.
