Drew McWeeny (born May 26, 1970), also known by his pseudonym Moriarty, is a film critic, screenwriter, and the former west coast editor of the Ain't It Cool News website. In a December 2008 review of The Curious Case of Benjamin Button, McWeeny announced that he would be leaving Ain't It Cool News to work for HitFix.com.

He attended, but did not graduate from, Florida State University, instead choosing to focus on a career in entertainment in Los Angeles. He has two sons, Toshiro Lucas McWeeny, born in 2005 and Allen Miles McWeeny, born in 2008.