Samorn Kieng (born 4 March 1983 in Kandal Province) is a Cambodian middle-distance runner.
He competed in the men's 800 m event at the 2012 Summer Olympics but was eliminated in the first round.
However, Kieng did finish with a season's best time of 1:55.26.Kieng took part in the 2012 IAAF World Indoor Championships where he broke the national record with a time of 1:59.14 even though Kieng was eliminated in the first round.
He also ran in the heats of the event at the 2013 World Championships in Athletics.