| Birth Place: | Marseille, France |
| Height: | 1.80 m |
| Weight: | 75 kg |
| Classes: | 49er FX |
| Club: | Yachting Club Pointe Rouge, Marseille |
| Coach: | Xavier Rohart Benjamin Bonneau (national) |
| Show-Medals: | ys |
Julien d'Ortoli (born 7 October 1983) is a French sailor in the 49er FX class. Together with Noé Delpech he won a bronze medal at the 2013 European Championships and placed fifth at the 2016 Olympics.
D'Ortoli took up sailing in 1990 and since 2007 races with Delpech. The pair has a nickname Juno from the combination of the first two letters of their given names.