Well, to make a long story short, Melanie Laurent is Jewish!
Since Melanie Laurent's mother is Jewish, and in Orthodox Judaism and Conservative Judaism, those with a Jewish mother (or those who underwent a halakhic conversion) are considered Jewish, then that makes her Jewish. Her father is Jewish too.
Melanie Laurent was born on 21 February 1983 in Paris, France.
She became known to international audiences for her role as Shoshanna Dreyfus in Quentin Tarantino's 2009 film Inglourious Basterds, for which she won Best Actress from the Online Film Critics Society and the Austin Film Critics Association.
If you see any details that require update, please Let us know!