Daniel "Dan" Gerson was an American screenwriter best-known for his work with Pixar and Walt Disney Animation Studios. He co-wrote the screenplays of Monsters, Inc., Monsters University and Big Hero 6; the latter two with his regular writing partner Robert L. Baird. At the time of his death, it was reported that he would be a co-writer of the upcoming Cars 3, again with Baird.
Gerson was also a member of the Pixar and Disney writing teams, and contributed material to Chicken Little, Curious George, Cars, Meet the Robinsons, Up, Inside Out and Zootopia, as well as television shows including Misguided Angeles, Big Wolf on Campus and Something So Right. Of the films he wrote, Big Hero 6 won the Academy Award for best animated film, for which Monsters, Inc. was also nominated. Big Hero 6 was also the highest-grossing animated film of 2014. He also won a BAFTA award.
Gerson died in Los Angeles at the age of 49 on February 6, 2016, due to brain cancer. He was survived by his parents, wife and children, and his sister.