Joanne Ella "Jo" Fenn (née Mersh; born 19 October 1974 in Leytonstone London), attended Connaught School for Girls and is an English singer-songwriter and is a former Olympic middle-distance runner.
In 2004 Fenn won the 800m bronze medal at the World Indoor Championships in Budapest, Hungary.
Fenn had a serious knee injury and major operation on a grapefruit-sized cyst in 2006 and split from her longtime coach in late 2007.
She then spent time in Lausanne to work with Trent Sterling a Canadian middle distance coach with a view to competing in 2008 Olympic Games but she did not qualify and subsequently retired.
In this role she visits schools up and down the country to inspire and engage with children promoting the Be the Best you can Be programme.