Jessica Zi Jia Guo (born 23 June 2005)[1] is a Canadian left-handed foil fencer.

In 2019, Guo won the silver medal in the women's foil event at the Pan American Games held in Lima, Peru.

On 6 April 2022, Guo successfully defended her Cadet Women's Foil World Championship title in Dubai.

In the final match of women's foil, Guo faced Great Britain's Carolina Stutchbury, winning with a 15-7 score.

In the semifinal round, Stutchbury won against Japan's Rino Nagase, 15-10, while Guo defeated Italy's Matilde Molinari, 15-11.