Jamie Ross Donaldson (born 19 October 1975) is a Welsh professional golfer.
Donaldson was born in Pontypridd. He turned professional in 2000. Having failed to come through the European Tour's qualifying school, in 2001 he played predominantly on the second tier Challenge Tour. He won the BMW Russian Open and the Telia Grand Prix in Sweden on his way to second place in the Challenge Tour Rankings. He also made the most of limited opportunities on the elite tour, making five cuts from seven events, with two top ten finishes, as he ended the season inside the top 100 on the Order of Merit to earn his European Tour card for 2002.
Donaldson spent the next few years playing on the European Tour, reaching a best of 58th on the final Order of Merit in 2003, but began to be troubled by back problems in 2004. In 2007 he was back on the Challenge Tour, but showed a return to form, picking up his third Challenge Tour win at the Abierto Telefonica de Guatemala on his way to 4th place on the end of season rankings. He was back on the European Tour in 2008 and was again inside the top 100 on the Order of Merit to maintain his playing rights for the 2009 season.