Korean horror films have been around since the early years of Korean cinema, however, it was not until the late 1990s that the genre began to experience a renewal. Many of the Korean horror films tend to focus on the suffering and the anguish of characters rather than focus on the explicit "blood and guts" aspect of horror. Korean horror features many of the same motifs, themes, and imagery as Japanese horror.
Modern South Korean horror films are typically distinguished by stylish directing, themes of social commentary, and genre blending.  The horror and thriller genres are cited as gaining international attention to South Korean Cinema.
Several Korean horror films have been adapted into English-language Hollywood films such as Oldboy (2003), Into the Mirror (2003), and A Tale of Two Sisters (2003). Train to Busan (2016) and The Wailing (2016) are rumored to currently have remakes in talks for production.  
The expression, "When a woman is full of resentment, she will bring frost in May and June" may offer some explanation for the popularity of the female ghost that is often featured in Korean horror films. Her deep feeling of resentment is cold enough to freeze the hot air that occurs during those months. The woman's vengeance is a thing to be feared, thus becoming the object of horror. In the past women have been oppressed and ignored for so long that the horrific rage and vengeance we see in the films have been brought upon by the many years of repression.  Another belief is that when a woman dies before she gets to enjoy the pleasures of marriage and having children, she will not be able to move on to the "other side". Instead she becomes trapped between the two worlds and causes horrific phenomena.  The hierarchical domestic status a man's mother has and the often strained relationship with her daughter-in-laws in Korea is also used as a means of creating female villains in media. Films such as A Devilish Homicide (1965) and The Hole (1997 film) cast a murderous or cruel mother-in-law against the protagonist.
South Korean cinema is known for violent thrillers with themes of revenge like Bedevilled, I Saw the Devil (2010), and The Vengeance Trilogy. Recent revenge films also tend to follow the characters seeking revenge rather than the protagonist being a victim of a vengeful ghost or person. The desire to create and see films about revenge is often explained as a result of social anger built up in a populace by South Korea's turbulent history.  Park Chan-wook director of The Vengeance Trilogy has said that his revenge motivated movies serve as a reaction to Korean culture's traditional value of peace making and Forgiveness. 
The 2010 Korean Horror Film Festival was held in Mandaluyong in the Philippines at the Shangri-La Plaza Mall from October 27–31 and through November 2–4. It worked together with the Embassy of the Republic of Korea, The Korean-Philippine Foundation, Inc. and Shangri-La Plaza. With free admission attendees were treated to some of the best and highly successful Korean horror films. Films such as Arang , The Red Shoes , M , Hansel and Gretel , Ghost, Paradise Murdered , and Epitaph were among the films showcased. 
The Housemaid (1960) has been described in Koreanfilm.org as a "consensus pick as one of the top three Korean films of all time".
Whispering Corridors (1998) is seen as the film to have sparked the explosion of the Korean horror genre. It centers on the theme of school girls and the mysterious "other side", but also offered criticism of the Korean school system. Four more distinct horror films set in all-girls schools were made as part of Whispering Corridors (film series).
A Tale of Two Sisters (2003) is the highest-grossing Korean horror film so far and the first to be screened in America. It was remade in America in 2009 as The Uninvited . Based on a folk tale titled Janghwa Hongryeon jeon, it tells the story of two sisters dealing with a controlling stepmother and a passive father.
Save the Green Planet! (2003) demonstrates Korean cinema's ability to blend genre in non-traditional ways. The film follows an unstable man who kidnaps and tortures an executive he believes to be an alien. It combines slapstick comedy, psychological thriller, and sci-fi horror. 
Someone Behind You (2007) is an extremely violent supernatural thriller based on the 2005 comic novel "Two Will Come" by Kang-Kyung-Ok. It focuses on an increasingly escalating unprecedented family murders or the issue of family annihilation and a young woman after witnessing the shocking killings around her area she too is followed by an unexplainable-yet brutal and bloody curse fearing that her family and friends are out to put her to death in their murderous hands. A strange menacing student warns her not to trust her family, friends, even not herself. In 2009 the film was released in America under the title "Voices" it premiered at the defunct film festival After Dark Horrorfest.
Train to Busan (2016) is an action horror take on the Zombie apocalypse. A man and his young daughter journey to see the girl's mother when a zombie outbreak occurs, forcing the passengers to attempt to survive till they can reach a safe zone in Busan. The film is one of the most internationally successful films from South Korea and broke domestic box office records. 
Films such as Gonjiam: Haunted Asylum (2018) have brought Korean horror films even more international attention.
Horror is a film genre that seeks to elicit fear or disgust in its audience for entertainment purposes.
Psychological horror is a subgenre of horror and psychological fiction with a particular focus on mental, emotional, and psychological states to frighten, disturb, or unsettle its audience. The subgenre frequently overlaps with the related subgenre of psychological thriller, and often uses mystery elements and characters with unstable, unreliable, or disturbed psychological states to enhance the suspense, drama, action, and paranoia of the setting and plot and to provide an overall creepy, unpleasant, unsettling, or distressing atmosphere.
Robert Barton Englund is an American actor and director. He is best known for playing the supernatural serial killer Freddy Krueger in the Nightmare on Elm Street film series. Classically trained at the Royal Academy of Dramatic Art, Englund began his career as a stage actor in regional theatre, and made his film debut in Buster and Billie in 1974. After supporting roles in films in the 1970s such as Stay Hungry, A Star Is Born, and Big Wednesday, Englund had his breakthrough as the resistance fighter Willie in the miniseries V in 1983. Following his performance in the original A Nightmare on Elm Street in 1984, he became closely associated with the horror film genre, and is widely-regarded as one of its iconic actors.
Pumpkinhead is a 1988 American horror film. It was the directorial debut of special effects artist Stan Winston. The film has built up a cult following since its release. The first in the Pumpkinhead franchise, it was followed by a direct-to-video sequel, two TV film sequels, and a comic book series. The film was originally called Vengeance: The Demon and it was inspired by a poem written by poet Ed Justin. The film inspired a video game called Bloodwings: Pumpkinhead's revenge.
Japanese horror is horror fiction derived from popular culture in Japan, generally noted for its unique thematic and conventional treatment of the horror genre differing from the traditional Western representation of horror. Japanese horror tends to focus on psychological horror, tension building (suspense), and supernatural horror, particularly involving ghosts (yūrei) and poltergeists. Other Japanese horror fiction contains themes of folk religion such as possession, exorcism, shamanism, precognition, and yōkai. Forms of Japanese horror fiction include artwork, theater, literature, film, anime and video games.
Whispering Corridors is a 1998 South Korean supernatural horror film directed and co-written by Park Ki-hyung. It was part of the explosion in South Korean cinema following the liberalization of censorship in the aftermath of the end of the country's military dictatorship. The film makes a social commentary on authoritarianism and conformity in the harsh South Korean education system.
Bunshinsaba (Korean: 분신사바) is a 2004 South Korean horror film directed by Ahn Byeong-ki.
Memento Mori is a 1999 South Korean horror film, and the second installment of the Whispering Corridors film series. It is a sequel to 1998's Whispering Corridors, and is also set in an all-girls high school, but the films are otherwise unrelated. Memento Mori was one of the first Korean commercial films to depict lesbian characters. However, prevailing Korean attitudes constrained its potential to be widely viewed, even more so as the controversial themes targeted the teen demographic.
Toronto After Dark Film Festival is a showcase of horror, sci-fi, action and cult cinema held annually in Toronto, Ontario, Canada. The festival premieres a diverse selection of feature-length and short-films from around the world including new works from Asia, Europe and North America.
Horror films in Mexico form part of cinema of the country.
Arang is a 2006 South Korean horror thriller film directed and co-written by Ahn Sang-hoon. It stars Song Yoon-ah and Lee Dong-wook as two detectives. The film was inspired by the folklore of the same name, which tells of a vengeful spirit of a woman who was raped and killed murdering magistrates in a village.
Horror films in Cambodia, first popular in the 1970s, have received renewed attention in Cambodian film making since the resurgence of the local industry in 2003. Horror is one of three popular genres into which most Cambodian films can be loosely grouped, the other two being period pieces and melodrama/romantic drama. The fledgling Cambodian industry of the mid 2000s looked to capitalize on the world-wide popularity of Japanese horror films which have heavily influenced Cambodian horror films. Common themes are ghost or spirit hauntings, possession, folk mythology and revenge by supernatural means. The storytelling takes a slower pace than Western horror and relies on suspense, a pervasive sense of doom and dread, and psychologically disturbing events and situations. Unlike its Japanese counterparts however, many Cambodian horror films also feature over the top gore as seen in Western horror.
Yeon Sang-ho is a South Korean film director and screenwriter. He gained international popularity for working his adult animated films The King of Pigs (2011) and The Fake (2013), and the live-action film Train to Busan (2016), its animated prequel Seoul Station (2016) and live-action sequel Peninsula (2020), and first South Korean superhero film Psychokinesis (2018).
Seoul Station is a South Korean adult animated zombie film written and directed by Yeon Sang-ho. Released on August 18, 2016, the film stars Shim Eun-kyung, Ryu Seung-ryong and Lee Joon in the lead roles. The film was shown at the 2016 Brussels International Fantastic Film Festival. The film was awarded the Best Animated Feature Film at the 10th edition of the Asian Pacific Screen Awards in 2016.
The Wailing is a 2016 South Korean horror film written and directed by Na Hong-jin and starring Kwak Do-won, Hwang Jung-min, Chun Woo-hee. The film centers on a policeman who investigates a series of mysterious killings and illnesses in a remote Korean village called Gokseong in order to save his daughter. The film was both a commercial and critical success.
Won Shin-yun is a South Korean film director. Won has the unique background of having been a stuntman before making his directorial horror film debut The Wig (2005). He filmed a series of thrillers, including A Bloody Aria (2006), Seven Days (2007) and The Suspect (2013). The Suspect was a box office hit with over 4.1 million admissions.
Atomic Monster is an American film and television production company, founded in 2014 by James Wan. The company is known for producing films in The Conjuring Universe, Lights Out, Mortal Kombat, Malignant and M3GAN.
Gonjiam: Haunted Asylum is a 2018 South Korean found footage horror film directed by Jung Bum-shik. Based on a real-life psychiatric hospital of the same name, it stars Wi Ha-joon, Park Ji-hyun, Oh Ah-yeon, Moon Ye-won, Park Sung-hoon, Yoo Je-yoon and Lee Seung-wook in the lead roles. The narrative centers around a horror web series crew that travels to an abandoned asylum for a live broadcast in order to garner views and publicity.
The history of horror films is one that was described by author Siegbert Solomon Prawer as difficult to read as a linear historical path, with the genre changing throughout the decades, based on the state of cinema, audience tastes and contemporary world events.