Mélenchon is the leader of the hard-left party La France Insoumise (LFI).
His announcement was made during an interview on TF1.
This will be his fourth bid for the presidency.
Updates
Update at 18:00 UTC on 2026-06-06
Le Monde reported Radical-left leader Jean-Luc Mélenchon will hold his first major campaign meeting on Sunday, in the northern Paris suburb of Saint-Denis. He hopes the event's success will pressure some on the left to rally behind his candidacy.
Sources: Le Monde
Update at 10:23 UTC on 2026-06-08
Le Monde reported The hard-left four-time presidential candidate held his first campaign rally in Saint-Denis on Sunday.
Sources: Le Monde