JK Haru Is a Sex Worker in Another World (Japanese: JKハルは異世界で娼婦になった, Hepburn: JK Haru wa Isekai de Shōfu ni Natta) is a Japanese novel by Kō Hiratori, first published in Japan as a web novel from October 2016 to August 2017 on the website Shōsetsuka ni Narō.

The novel follows the high school student Haru Koyama, who is transported to another world after her death, where she begins work as a sex worker.

The Japanese high school student Haru Koyama and her male classmate Seiji Chiba are killed in a traffic accident and are teleported to another world together.

While Chiba becomes an adventurer and goes out to slay monsters, Haru discovers that women aren't allowed to have special powers in the new world, so she decides to make a living as a sex worker.

Morrissy interprets this as a mirror for how these medieval-looking worlds of this genre are particularly restrictive towards women, while male characters are not confronted with such situations due to their privileges.