Siobhan Maire Deirdre Fahey (; born 10 September 1958) is an Irish singer whose vocal range is a light contralto. She was a founding member of the British girl group Bananarama, who have had ten top-10 hits including the US number one hit single "Venus". She later formed the musical act Shakespears Sister, who had a UK number one hit with the 1992 single "Stay".
