The sole survivor of the Islamic State extremist group was sentenced to life in prison without parole for the 2015 Paris bombings and shootings that killed 130 people.
A special court also convicted 19 other men involved in the attack after a nine-month trial.
The prime suspect, Salah Abdeslam, was found guilty of murder and attempted murder. The court found that his explosive vest had malfunctioned, rejecting his argument that he threw the vest away because he decided not to follow through with the attack on the night of 13 November 2015.
Abdeslam, a 32-year-old Belgian of Moroccan descent, received the harshest sentence in France.
Eighteen others were convicted on various terrorism-related charges, and one was convicted on a less serious charge of fraud. Their sentences ranged from probation to life imprisonment.
During the trial, Abdeslam declared his radicalism, wept, apologized to the victims and begged the judges to forgive his mistakes.