List of Famous people with last name Deignan

Elizabeth Mary Deignan 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.

Philip Deignan is an Irish former professional road racing cyclist, who rode professionally between 2005 and 2018 for the Ag2r–La Mondiale, Cervélo TestTeam, Team RadioShack, UnitedHealthcare and Team Sky squads. A former Olympian, Deignan won a stage in the 2009 Vuelta a España, and finished in the top ten in the general classification.