Elizabeth Mary Deignan (née Armitstead; born 18 December 1988) is an English professional world champion track and road racing cyclist, who currently rides for UCI Women's WorldTeam Trek–Segafredo. She was the 2015 World road race champion and the 2014 Commonwealth Games road race champion. Deignan is also a twice winner of the season-long UCI Women's Road World Cup, winning the overall competition in 2014 and the final edition in 2015. At the 2012 Summer Olympics, Deignan won the silver medal in the road race. She has won the British National Road Race Championships four times, in 2011, 2013, 2015 and 2017.
Prior to her road career, Deignan won a total of five medals at the UCI Track Cycling World Championships in 2009 and 2010, including a gold medal in team pursuit in 2009 with Joanna Rowsell and Wendy Houvenaghel.