 Smith first played for Japan on 3 May 1998, against Canada at the Chichibunomiya Rugby Stadium.He was present in the 1999 Rugby World Cup roster, where he played all the 3 matches in the tournament, against Samoa,Wales and Argentina, at the Millennium Stadium, Cardiff, on 16 October, which would be his last international cap.Throughout all his career, Smith earned 17 caps, 15 points and 3 tries scored.