The mostly female demonstrators in Paris waved placards bearing the #Metoo hashtag and its French equivalent #Balancetonporc (Grass up your pig), which have used by tens of thousands of women in the past two weeks to share accounts of being sexually harassed or abused.
Similar gatherings were held in Marseille, Bordeaux and Lille, among other cities.
The aim was to ensure the campaign reached “beyond the social media buzz”, according to organiser Carol Galand, a freelance journalist.
French celebrities accused
Several prominent figures, including an MP from President Emmanuel Macron’s party, a TV competition judge and Islamic studies lecturer Tariq Ramadan, have been accused of assault.
Ramadan reacted to two rape accusations for the first time on Saturday evening, claiming it was a “campaign of calumny” on his Facebook page.
Feminist groups were due to demonstrate on Monday evening outside the Roman Polanski retrospective at the Cinémathèque Française film archive.
Wanted in the US for the statutory rape of a 13-year-old girl in the 1970s, Polanski now face an investigation into rape allegations in Switzerland, meaning that he faces at least four accusations of sexual assault.
Before the Weinstein scandal erupted, the French government launched a consultation ahead of drafting a law against sexism and sexual violence.