Jodie Foster was considered to play President Alma Coin.
Liam Hemsworth (who played Gale) claimed that Jennifer Lawrence (who played Katniss) would make sure to eat garlic before their kissing scenes.
Although Effie Trinket (played by Elizabeth Banks) was absent for most of the book, the author, Suzanne Collins, contacted the director to make sure she would have a larger role in the films.
Julianne Moore, who plays President Coin, revealed that her two children convinced her to take the role.
During filming in sewage pipes, Jennifer Lawrence had a choking fit in response to the dry ice that was being used.
Instead of using a bald cap like many actors and actresses do, Natalie Dormer actually shaved half of her head for her role as Cressida.
Jena Malone, who played Johanna Mason, shared her birthday with the film's release date.
The film was given the name "Seashore" during production to retain secrecy.
The film had the 2014's biggest box-office opening with $123 million.
Katniss is named after a plant shaped like an arrowhead.