Steve Williams (born 3 October 1970) is a former Wales international rugby union player. A back row forward, he played his club rugby for Swansea, Neath, Cardiff, London Irish and Northampton RFC and has 29 international caps. He started in the 2002 Powergen Cup Final at Twickenham, as London Irish defeated the Northampton Saints.
He is the only man to have played 4, 5, 6, 7, and 8 for Wales.