Andy Muschietti est né le 26 août 1973 à Buenos Aires, District Fédéral, Argentine. Il est producteur et réalisateur. Il est connu pour Mama (2013), Ça (2017) et Ça: Chapitre deux (2019).
[on Ça (2017)] In developing the film, I was retrieving my emotional experience reading the book. I wanted to communicate the feeling of intimacy and innocence of the Losers. It wasn't that difficult. It's almost like smelling; those smells that stay with you for so long.