Eilidh Doyle (pronounced AY-lee; née Child; born 20 February 1987) is a Scottish track and field athlete who specialises in the 400 metres hurdles. She represented Great Britain at the 2012 Olympic Games in London, and won an Olympic bronze medal in the 4 x 400 metres relay at the 2016 Games in Rio.
Doyle is the Scottish record holder for the 400 metres hurdles with 54.09 sec (2016) and the indoor 400 metres with 51.45 sec (2013). She is the 2014 European Champion and a two-time Commonwealth silver medalist (2010 and 2014) in the 400 metres hurdles. Her other relay honours include World Championship bronze medals in 2013 and 2015.
Doyle was born in Perth, Scotland. As a youngster, she twice won the U13 Scottish Schools butterfly swimming title. One of her sisters is a writer, the other used to compete at triple jump and her brother is a footballer.
In 2009, Doyle significantly improved her personal best for the 400m hurdles from 56.84 to 55.32, to finish second at the European U23 Championships in Kaunus, Lithuania, behind fellow British athlete Perri Shakes-Drayton. She also qualified for that years World Championships in Berlin, reaching the semi-finals. In 2010, she further improved to 55.16 at the London Diamond League in August. Then in October, she won a silver medal at the Commonwealth Games in Delhi in 55.62.