Detention (Chinese: 返校) is a 2019 Taiwanese supernatural psychological horror film directed by John Hsu and based on the popular horror video game of same name developed by Red Candle Games. Set in 1962 during Taiwan's White Terror period, two students are trapped at their hillside high school at night. While trying to escape and find their missing teacher, they encounter ghosts and the dark truth of their fate.

The film was not released in mainland China (due to government order), but enjoyed strong box office success in Taiwan, Hong Kong, Singapore, Malaysia, Indonesia, and South Korea; the film was also selected in the official section of the 2020 International Film Festival Rotterdam.

A TV series of the same name aired in 2020 on PTS and Netflix. The TV series is based on the video game, but its story is different from the film.