Abel Kirui (born 6 April 1982) is a long-distance runner from Kenya who competes in marathons. He had back-to-back wins in the World Championships Marathon in 2009 and 2011. He won in 2009 with a time of 2:06:54, then defended his title with a winning margin of two minutes and 28 seconds – the largest ever margin at the World Championship event. He won a silver medal in the 2012 Olympic marathon.
He has also won the 2016 Chicago Marathon, the 2008 Vienna Marathon and was runner-up at the 2007 Berlin Marathon