Marine Le Pen has been cleared of charges of incitement to hatred after comments she made five years ago comparing Muslim street prayers to a foreign occupation.
A French court acquitted the far-right leader, as the prosecutor had requested, according to a lawyer involved in the case.
The ruling came two days after Ms Le Pen's anti-immigration National Front party gained a record number of votes in regional elections.
Complaint
Four anti-racism associations had filed a complaint after Ms Le Pen said in a 2010 political meeting that Muslim street prayers could be compared to the Nazi occupation of France.
If convicted, Ms Le Pen faced up to a year in prison.
Her father, Jean-Marie Le Pen, has been convicted several times of the same charge - but never imprisoned.
PA