- Oh! My Ghost is the first commercial film, co-produced by Korea University of Media and Film and Film A Pictures Co., Ltd.
- Principal photography began on February 5, 2021, and was wrapped up at the end of March.
- It was anticipated to be released in theatres in the second half of 2021, but was postponed and finally released on September 15, 2022.
- The film was pre-sold in 13 countries overseas even before its release in South Korea.
- Oh! My Ghost was pre-sold in 13 countries overseas even before its release in South Korea. It was released theatrically in South Korea on September 15, 2022.