The actress will play Theodora the witch in Oz: The Great and Powerful, alongside Michelle Williams and Rachel Weisz as fellow witches Glinda and Evanora, respectively.
And Kunis insists her acting skills will be put to the test in the new fantasy film because she's so awe-struck by her co-stars and director Sam Raimi's magnificent sets.
She tells Eonline.com, "It's a bit nerve-wracking, I won't lie. It's been an amazing experience. It really has. The sets are gorgeous and stunning. Everybody in the film are amazing people and Sam's doing a beautiful job of directing it."
James Franco will star as the protagonist of the film, which is due for release in 2013.