The Evil Monkey is a fictional recurring gag in the hit comedy Family Guy. In a reference to childhood fears of "Monsters in the closet" (cf "Monsters Inc"), the evil monkey lives in Chris's closet. As his name suggests, he is filled with malice towards all, particularly Chris. Chris is the only member of the Griffin family who is aware of the presence of the monkey in the house, the others (except Stewie) laughing at the notion that Chris has a monkey in his closet.

Until Chris captured him and showed the Griffin family in Hannah Banana, the evil monkey had been seen by only six characters other than Chris throughout the entire series: the evil monkey's wife, the monkey she was sleeping with, Chris' pimple, Brian's son Dylan, and Peter Griffin (although mistaking him for Meg) and Herbert slept through his encounter.