Fergus "Gus" Greensmith (born 26 December 1996) is a British rally driver.
Greensmith's family owns fuel and lubricants distributor Crown Oil. A former youth goalkeeper for Manchester City F.C. and karter before moving into the ranks of rally driving.
As a karter who went to school in Manchester, Greensmith appeared in the CIK-FIA U18 World Karting Championship in 2012, racing alongside Charles Leclerc, Ben Barnicoat and Joey Mawson among others.
In 2014, Greensmith won the British Junior Rally Championship on a Ford Fiesta R1, and debuted at the Wales Rally GB on a Ford Fiesta R2.
In 2015, Greensmith entered the Drive DMACK Fiesta Trophy, where he finished sixth. He also entered five WRC rounds on a Ford Fiesta R2T.
At the 2016 Wales Rally GB, Greensmith drove a M-Sport Ford Fiesta R5.
Greensmith competed full-time in the 2017 World Rally Championship-2 on an M-Sport Ford Fiesta R5, finishing 11th in the overall standings.
In the 2018 World Rally Championship-2, Greensmith scored four podiums and placed fourth in points. In the 2018 Rally Mexico, Greensmith finished ninth and scored World Rally Championship points for the first time.
In 2019, Greensmith claimed two wins and six podiums on a Ford Fiesta R5, ranking third in the WRC-2 standings. He also entered three rounds with an M-Sport Ford Fiesta WRC, finishing 9th in Germany.
Greensmith became an M-Sport Ford factory driver for the 2020 World Rally Championship. He had a best finish of fifth at Turkey, and finished 11th in points.
In 2021, Greensmith had a best result of fourth at the Safari Rally, and was 9th in the overall table.
Greensmith earned his first WRC stage victory at the 2022 Monte Carlo Rally. He scored points in five out of 13 races, and was 10th in the WRC drivers standings.
In 2015, Greensmith teamed up with Idris Elba in a documentary series that Elba was filming for Discovery TV and drove him in a Ford Fiesta.
In 2025, Greensmith married his Finnish wife, Jessica Malin, in her hometown of Jyväskylä.