Girl from Nowhere (Thai: เด็กใหม่; RTGS: Dek Mai; lit. New Girl) is a Thai mystery thriller anthology television series created by studio SOUR Bangkok and starring actress Chicha "Kitty" Amatayakul in the lead role.

The first season was released on August 8, 2018, on GMM 25. A second season was released globally on Netflix on May 7, 2021, which exposed the show to international fame. It has hit number one on the currently most watched Netflix shows in Thailand, Vietnam and the Philippines, while also ranking in the top 10 in countries around the world such as Brazil. The show has been critically acclaimed for the usage of unconventional storytelling and takes on modern high school society.

The plot revolves around Nanno, an enigmatic girl who transfers to different private schools in Thailand and exposes the students and faculty's stories of lies, secrets, and hypocrisy. Nanno on occasion lies to provoke others. She is revealed to be a mischievous immortal entity, punishing wrongdoers for their crimes and misdeeds. In Season 2, Nanno meets her match in newfound rival Yuri, who has a different, more revenge-focused ideology and wants to take over Nanno's duties.

Each episode consists of individual stories and the appearance of Nanno at different schools.

Nanno is joined by a schoolgirl named Yuri, who becomes immortal after meeting Nanno.

The storylines in the episodes are inspired by actual real news reports where schoolgirls were victimized, but with the intent of showing how the victims will ultimately become the victor. For instance, "Minnie and the Four Bodies" was based on an incident where a student had crashed her car into a university van killing four people, and had avoided the consequences because of her family's wealthy connections.

"SOTUS" was also based on an incident where a senior punishes a junior for failing to follow the hazing rules, resulting in homicide.

Lead actress Amatayakul used "Tomie", a Japanese horror manga featuring a succubus-like woman, as her reference for the series.