Irvette van Zyl (born Irvette van Blerk on 5 July 1987) is a South African long-distance runner. She competed in the marathon at the 2012 Summer Olympics but did not finish the race. She has twice participated in the London Marathon and set her personal best of 2:31:26 hours there in 2013. She began running from a young age, winning the Zevenheuvelenloop at age fifteen and running as a junior for South Africa three times at the IAAF World Cross Country Championships. She represented her country at the 2010 IAAF World Half Marathon Championships. In 2012, she married South African hurdler L. J. van Zyl.