John Welborn, Australian rugby player
John Welborn (born 8 September 1970) is a former Australian rugby union player, who plays at the lock position. He is a former Wallaby. He was the first Western Australian-born player to represent Australia in rugby union, and played six matches for the Wallabies.

During his career, Welborn has played for CA Brive in Ligue Nationale de Rugby's TOP 14 division, the Sharks in the Currie Cup, Leicester Tigers in the Guinness Premiership and for the Western Force in Super Rugby.