David Giffin (born 6 November 1973) is a former vice-captain of the Wallabies in rugby union, where he played in the lock position. Queensland-born, he played most of his professional career with the ACT Brumbies in what was then the Super 12. At that level, he earned 81 caps – earning a further 49 at international level. At the height of his game he was considered to be the leading exponent of lineouts in world rugby. Giffin was a member of the Wallabies 1999 Rugby World Cup-winning squad, where he started in the final. He was also a part of the Wallabies 2003 Rugby World Cup squad where they finished runner-up.