Billy Berntsson (born 6 December 1984, in Hofterup) is a Swedish footballer who plays as a defender and is currently unsigned.
A product of the youth system at Malmö FF, Berntsson has also played for Herfølge BK, Falkenbergs FF and GIF Sundsvall.
After rejecting a new contract with GIF Sundsvall, Berntsson impressed enough whilst on trial at Kilmarnock to be offered a -year deal in January 2011.
In January 2012 Berntsson signed a 2+1 year deal with Swedish Superettan team Hammarby.