Fox Star Studios, a joint venture between 20th Century Fox and Star India, and Johar's production company will make these films in the course of three years.
"The Indian film industry is an important market for us and this strategic partnership offers us an excellent opportunity to fundamentally change the content quality paradigm," Uday Shankar, CEO, Star India said in a statement.
Johar, who recently debuted as full-fledged villain in Fox Star Studios' last release "Bombay Velvet", called it "a visionary 9 films alliance".
Apoorva Mehta, CEO of Dharma Productions, said the deal was "by far the biggest collaboration that the Indian film Industry has ever seen".
Johar is likely to direct at least one film and they plan to line up a stellar line up of titles, directors and actors.