Mon Mon Mon Monsters is a 2017 Taiwanese horror-comedy film written, directed and co-produced by Giddens Ko. It premiered as the closing film for the 41st Hong Kong International Film Festival in April 2017, and was released in theaters on July 28, 2017.

Unjustly accused of stealing money, Lin Shuwei is assigned to do community service alongside the bullies from class. As the gang of bullies progressively accept him as one of their own, Lin partakes in their misdeeds to seek their approval. During a night out, the group stumble upon a pair of flesh-eating female ghouls and capture one of them; they begin a sadistic game, which ultimately leads to disastrous consequences.

Ko originally intended for the film to be a mockumentary shot entirely on iPhone. This idea, however, was eventually disregarded as the project evolved into a more personal work inspired in part by the backlash the director was receiving at the time for a widely publicized affair. While discussing his inspiration, Ko has stated: "Maybe millions of Taiwanese people hated me, so I wanted to shoot a horror movie to scare everybody, to express my hate."