The 20-year-old will play Katniss Everdeen, a girl who joins a survival contest in order to save her community, in the movie based on the best-selling book series that many have compared to the Twilight franchise.
The story is set in the future, where teenagers are randomly chosen to participate on the TV programme Hunger Games, which forces them to compete to the death.
According to The Wrap, the Oscar-nominee finalised the deal yesterday and is said to have beaten actresses Hailee Steinfeld, Emma Roberts, Chloe Moretz and Abigail Breslin to the role.
Lionsgate plans to adapt the book series as a trilogy, which will include The Hunger Games, Catching Fire and Mockingjay, based on the novels by Suzanne Collins.
The film will hit cinemas in the US in March 2012.