On Tuesday morning, the Oscar nominations were announced in Beverly Hills, California, and James Cameron’s ‘Avatar‘ and his ex-wife Kathryn Bigelow’sThe Hurt Locker‘ tied for the most nominations. These films will be in nine different categories, including Best Picture and Best Director.

Cameron’s “Avatar” won best drama and director at the Golden Globes, while Bigelow’s “The Hurt Locker” beat out Cameron at the Directors Guild of America Awards.

Based on the Oscar’s history, no woman has ever won the directing Oscar.

RELATED: Complete List of 2010 Academy Award Nominees.

Also nominated for best director are Jason Reitman for “Up in the Air” and Quentin Tarantino for “Inglourious Basterds.” “Up in the Air” co-writer Reitman also had a nomination for adapted screenplay, while Tarantino also earned a nomination for original screenplay.

District 9“; the animated comedy “Up“; the World War II saga “Inglourious Basterds“; the football drama “The Blind Side“; the recession tale “Up in The Air,” the 1960s drama “A Serious Man,” and the teen tales “An Education,” and “Precious” also nominated for Best Picture.

Acting nominees include the four stars who have dominated early awards shows: Lead players Sandra Bullock for the football drama “The Blind Side” and Jeff Bridges for the country-music tale “Crazy Heart” and supporting performers Mo’Nique for “Precious” and Christoph Waltz for “Inglourious Basterds.”

The 82nd Annual Academy Awards will be presented March 7 at the Kodak Theatre in Los Angeles, hosted by Steve Martin and Alec Baldwin.