The actress will next be seen playing a heavily pregnant woman in Kahaani.
Balan told Hindustan Times: "[Producer] Sujoy Ghosh has been saying this for a long time. He has even told me that he will soon write a script for me. But I don't think I can ever direct a film.
"I am getting meaty parts in films, then why should I settle for bones? Acting is fine, but I don't think I will ever turn into direction."
In January, Balan dropped out of the gangster thriller Shootout at Wadala because she did not want to be in a male-dominated film.