Jessica Castles (born 16 July 2002) is a British-born Swedish artistic gymnast who represented Sweden in international competitions.

She grew up in Qatar, having lived there for nine years before moving back to England at age 14 in order to get better gymnastics training and coaching.

In April she competed at the English Championships where she placed 11th in the all-around but recorded the second highest floor exercise score amongst juniors.

[6] The following month she competed at a team selection competition for the 2017 Junior Nordic Championships where she placed second in the all-around behind Tonya Paulsson but recorded the highest floor exercise score.

Individually she finished ninth in the all-around and won gold on floor exercise ahead of Camille Rasmussen of Denmark.

[11] She ended the season competing at the Top Gym Tournament where she finished sixth in the all-around, first on balance beam, and second on floor exercise behind Amelie Morgan.

Castles competed at the English Championships as a guest where she won silver in the all-around behind club teammate and Jamaica national team member Danusia Francis.

During event finals she matched her placement and won the bronze behind Anastasia Bachynska of Ukraine and Aneta Holasová of the Czech Republic.