Julie Derron (born 10 September 1996) is a Swiss triathlete.

[3] She won a bronze medal in the mixed relay at the 2022 European Triathlon Championships in Munich, Germany.

[7] In July 2024, she was a silver medalist at the World Triathlon Mixed Relay Championships.

[8] Competing at the 2024 Summer Olympics in Paris, she won the silver medal in the women's triathlon on 31 July 2024.

[9][10] Derron was one of the flag-bearers for Switzerland at the closing ceremony alongside swimmer Roman Mityukov.