Vivian Jepkemoi Cheruiyot (born September 11, 1983 in Elgeyo-Marakwet County) is an athlete from Kenya who specialises in long distance running. She represented Kenya at the 2000 Summer Olympics and the 2008 Summer Olympics. Cheruiyot won a silver medal in the 5000 metres at the 2007 World Championships in Athletics and became the world champion in the event at the 2009 edition.
After taking a silver at the 2010 IAAF World Indoor Championships, she won a number of outdoor titles that year, becoming African champion, Commonwealth Games champion and IAAF Continental Cup champion, as well as winning the 2010 IAAF Diamond League title.
She holds the Kenyan record and Commonwealth record for the 5000 m with her best time of 14:20.89, which was set at the DN Galan in 2011.