Depardieu was also convicted of assaulting an assistant director called Sarah, which was not her real name.
The actor was not in court to hear the verdict but was instead working on a film set in the Azores.
Carine Durrieu-Diebolt, the lawyer acting for the two women, said she hoped the verdict marked the end of impunity for an artist in the film industry.
"It's a victory for two women on a film set but it's a victory for all the women behind this case and I'm thinking of all of Depardieu's other victims," she told reporters.
The lawyer also noted the case had come to an end hours before the Cannes film festival was due to start.
The judge said there was no reason to doubt the word of the two women victims, who had told the court how Depardieu had touched them on intimate parts of the body, using lewd language.
He placed Depardieu on a list of sex offenders and ordered him to pay compensation of €1,000 (£840) each to Amélie and Sarah for "secondary victimisation", a recent innovation covering the additional suffering for the women from the trial itself.
Depardieu's lawyer Jérémie Assous had accused the women of lying during their evidence.
