Sian Evans (born 9 October 1971) is a Welsh singer. She is front woman and singer-songwriter of the band Kosheen, a trip-hop/drum and bass group that had their first two albums rise into the top 10 of the UK Albums Chart between 2001 and 2003. She has also joined a list of Welsh artists to have topped the UK Singles Chart with collaboration on the track "Louder" with DJ Fresh.
