The jury for Friday's prize was made up of a series of journalists and presided over by political scientist Thomas Guénolé, reported France Info.
Le Pen, the president of the anti-Europe and anti-immigration National Front, appeared to have tripped up most when it came to immigrant statistics.
The jury particularly pointed out several of these incidents, including when she increased the daily number of refugees crossing the Mediterranean by tenfold in an interview with iTV.
Another notable time she was rumbled was after she tweeted out that firefighters in Calais had been attacked by migrants, which was later refuted by the fire department itself.
She was also called out for exaggerating statistics on the gender of migrants, after she initially said they were 99 percent male, before later reducing it to 75 percent. The figure at the time was closer to 69 percent.
http://www.thelocal.fr/20160205/liar-of-the-year-award-goes-to-marine-le-pen
http://www.thelocal.fr/20160205/liar-of-the-year-award-goes-to-marine-le-pen