William Fletcher (born 24 December 1989) is a retired British rower who competed at the 2016 Summer Olympics.

Fletcher studied at Durham University as a member of Hild Bede, graduating with a Modern Languages degree in 2011.

[1] He competed at the 2013 World Rowing Championships in Chungju, where he won a bronze medal as part of the lightweight coxless four with Adam Freeman-Pask, Jono Clegg and Chris Bartley.

[2] He was part of the British team that topped the medal table at the 2015 World Rowing Championships at Lac d'Aiguebelette in France, where he won a silver medal as part of the lightweight double scull with Richard Chambers.

[3] He and Richard Chambers placed seventh in the men's lightweight double sculls event at the 2016 Summer Olympic Games.