Stephanie Davis (born 26 August 1990) is a British marathon runner, who competed in the marathon event at the delayed 2020 Summer Olympics, having won the British Olympic trial event. An unsponsored, part-time athlete, Davis' main career is in finance.

Davis is a part-time marathon runner,^[1] and as of 2021, she did not have a sponsor.^[2] She is a member of Clapham Chasers athletics club,^[1] and has previously run for the University of Edinburgh.^[2] She is coached by Phil Kissi.^[3]

Davis' first marathon was the 2018 Berlin Marathon, which she entered with her partner and a few friends.^[4] She finished in a time of 2:41:16.^[2] She ran the 2019 London Marathon in the mass participation event and with a hip injury. She finished in 2:32:38.^[1][2] The same year, she recorded a personal best time of 2:27:40 at the Valencia Marathon; the time was faster than the Olympic qualification threshold.^[1] It was also the ninth fastest marathon time by a Briton ever,^[5] and the third fastest ever by a Scottish woman.^[6] Davis had been scheduled to compete at the 2020 London Marathon, until it was postponed due to the COVID-19 pandemic. It would have been her first marathon starting with the elite field.^[2][5] She came third in the 2020 The Big Half race, in a personal best time of 1:11:15.^[7][8] Later in the year, she was scheduled to compete at the 2020 World Athletics Half Marathon Championships,^[8] although she later pulled out of the event due to an injury.^[9] She had qualified to compete due to her time at The Big Half event,^[7] and it would have been her first major international event.^[4]

Davis competed at the 2021 British Athletics Marathon and 20km Walk Trial; it was her first marathon since the 2019 Valencia Marathon.^[10] She won the race by over three minutes,^[1] and she ran the second half of the race in a negative split of 1:13:10.^[11] Her finishing time of 2:27:16 was a personal best,^[12] and was over two minutes inside the Olympic qualifying time of 2:29:30.^[11] As a result, Davis qualified to compete at the 2020 Summer Olympics.^[1][12] At the Games, Davis finished 39th.^[13]

In April 2022, Davis was selected for the marathon event at the 2022 Commonwealth Games. It was scheduled to be her first appearance for Scotland,^[14][15] though she later withdrew from the squad due to a foot injury.^[16]

Davis is from Bearsden, Glasgow, Scotland.^[17] She now lives in London, England.^[6] Aside from running, Davis works in finance for Lazard,^[1][6] three days a week.^[4]