Robert 'Bobby' Donnelly (born 12 September 1962) is a South African lawn bowler.
Donnelly secured a silver medal in the fours at the 2000 World Outdoor Bowls Championship before competing in the 2002 Commonwealth Games bowls singles after receiving a late call up as an injury replacement. He took a surprise gold medal defeating Jeremy Henry in the final.
In 2009 he won the triples and fours gold medals at the Atlantic Bowls Championships and two years later he won the pairs gold medal and singles bronze medal at the 2011 Atlantic Bowls Championships.
He won the 2013 singles at the National Championships bowling for the Wanderers Bowls Club.
A second Commonwealth Games gold came his way in the men's triples at the 2014 Commonwealth Games.
He was selected as part of the South Africa team for the 2018 Commonwealth Games on the Gold Coast in Queensland.