Jon Welsh (born 13 October 1986) is a Scottish rugby union player currently playing for Newcastle Falcons. Welsh was previously at Glasgow Warriors, and was named in the Pro12 Dream Team at the end of the 2011/12 season.
On 1 September 2015 Welsh was named in Vern Cotter'sScotland squad for the 2015 Rugby World Cup. On 18 October 2015 he was involved in a controversial incident in the final minutes of Scotland's quarter final against Australia. Scotland were defending a 34–32 lead going into the final minutes when a penalty was given by referee Craig Joubert for an apparent offside offence committed by Welsh. The ball had been knocked forward by John Hardie and was also touched by Australian scrum-half Nick Phipps before Welsh picked the ball up. Had Joubert deemed Phipps' touch to be intentional then the penalty would have been downgraded to an Australian scrum. Bernard Foley kicked the resulting penalty and sent Australia through.