Jessie Knight (born 15 June 1994) is a British athlete specialising in the 400 metres hurdles.

[5] She was later named to the British track and field team ahead of the 2020 Summer Olympics for the 400 metres hurdles event alongside Meghan Beesley and Jessica Turner.

[6] Upon arriving in Tokyo, Knight was one of six British athletes forced to self-isolate after a passenger on her flight had tested positive for COVID-19.

[7] Knight competed in the women's 4 x 400 metres relay for England in the 2022 Commonwealth Games, where despite managing to hold off Canada's Kyra Constantine to finish first in the final by 0.01s, England did not medal due to a lane violation earlier in the race.

After winning the 400 metres hurdles silver medal at the 2024 British Athletics Championships, Knight was subsequently named in the Great Britain team for the 2024 Summer Olympics.