Julien Leonardelli (born 14 July 1987) is a French politician.

A member of the National Rally, he has been a Member of the European Parliament since 2024, a municipal councilor in Fronton from 2020 to 2024, and a regional councilor in Occitanie since 2016.

Julien Leonardelli was born on 14 July 1987 in Lavelanet, Ariège. He grew up between Ariège, Castelsarrasin, and Perpignan, then moved to Fronton in 2012. He works as a sales representative.

He joined the National Rally in Perpignan in 2005, on his 18th birthday, alongside Louis Aliot.

Julien Leonardelli was elected in the second round of the 2015 regional elections in Languedoc-Roussillon-Midi-Pyrénées as a regional councilor for Occitanie within the National Rally group, and was re-elected in 2021.

In 2013, he was appointed departmental delegate of the National Rally for the Haute-Garonne department, representing the National Rally at the departmental level.

In 2017, he stood as a candidate in the 2017 legislative elections in the fifth constituency of Haute-Garonne, where he came second in the first round with 16.67% of the vote, behind La République en Marche candidate Jean-François Portarrieu. He was defeated in the second round with 32.40% of the vote.

In 2020, Julien Leonardelli ran in the municipal elections in Fronton. He was defeated in the first round by the incumbent mayor, Hugo Cavagnac, who won 77.27% of the vote. His list came in second with 13.19% of the vote and won two seats: himself and Nicole Izard.