Chad Hayes is an American screenwriter and producer, and twin brother of Carey Hayes. They are writing partners, and wrote such films as the 2005 remake of House of Wax, The Reaping (2007) and The Conjuring (2013). He and Carey also starred in Doublemint gum commercials in their childhood.

Hayes was born April 21, 1961, in Portland, Oregon, the identical twin brother of Carey Hayes. They were raised Baptist. Chad has two children: Dylan and Hanna.