Joan Jepkorir Aiyabei (born 17 May 1979 in Uasin Gishu) is a Kenyan long-distance runner.
In 1996, she finished in 5th place in the women's 5000 metres at the 1996 World Junior Championships in Athletics held in Sydney, Australia.[1] She finished sixteenth at the 2002 World Cross Country Championships, but this was not enough to give her a place on the medal-winning team. She finished the season on a high note with a win at the Cross Internacional de Venta de Baños.[2]
At the 2003 World Cross Country Championships she finished twelfth in the long race, while the Kenyan team, of which Aiyabei was a part, won the silver medal in the team competition.
