Winnie Nanyondo (born 23 August 1993, in Mulago)[1] is a Ugandan middle- and long-distance runner.

She has represented her native country in several important international events, including both the 2016 Rio Olympics and 2020 Tokyo Olympics, the 2014 World University Cross Country Championships, the 2014 Commonwealth Games, the 2013 Summer Universiade, and the 2012 World Junior Championships in Athletics.

A year later, at the 2013 Summer Universiade in the 800 metres, her 2:02.96 finish time in the semi-finals was not fast enough to advance to the final.

[4] A little more than a month later, at the Herculis meet in Monaco, she again improved her personal best in the 800 meters to 1:58.63, which placed her third behind second-place finisher and 2013 world champion Eunice Sum (1:57.92) and the winner Ajee' Wilson (1:57.67).

[8][9] At the 2016 Olympic Games in Rio de Janeiro, she did not advance out of the first round of the 800 metres event, finishing sixth in heat #5 in a time of 2:02.77.