Jon Raahauge Rud (born 11 February 1986) is a Danish swimmer. He participated for the first time at the 2008 Olympics in the 200 metre freestyle and the 400 metre freestyle. In July 2007, Rud competed at the Danish Open in Aarhus, Denmark with the West Swim Esbjerg swimming club. He finished second in the Men's 400 metre freestyle, second in the Men's 200 metre freestyle, third in the Men's 800 metre freestyle relay, fifth in the Men's 400 metre freestyle relay, and fourth in the Men's 400 metre medley relay.