Not that she wouldn't be deserving, necessarily. The 26-year-old's girl-next-door charm (and beauty) could make her a great fit as Ana, Christian Grey's lover.
Harry Potter's Emma Watson, Vampire Diaries' Nina Dobrev, Twilight's Kristen Stewart and Gilmore Girls' Alexis Bledel have also been talked about as potential Anas.
Ryan Gosling, Ian Somerhalder and Matt Bomer are among some of the more popular fan choices to play mysterious billionaire businessman Christian.
No one has been cast in either role.
One addition to the 50 Shades team that has been confirmed is Kelly Marcel, who will pen the screen adaptation. Michael De Luca and Dana Brunetti are on board to produce.
Fantasy casting the two leads in the movie version of the S&M-filled, Twilight fan fiction-inspired saga has become a favorite online pastime in recent months.
Kunis' possible casting is sure to inspire strong opinions.