The 33-year-old actor has signed up to write a science fiction family comedy with his partner Ryan Dixon for Disney, according to The Hollywood Reporter.
A plot description for the movie is currently being kept confidential by Disney.
Gad provided the voice of Olaf the snowman in 'Frozen'.
Disney recently denied that a 'Frozen' sequel is in the works, despite the fact that it has become the highest-grossing animated movie of all-time.
Gad and Dixon have also been working on the sequel to 'Twins'.