The Villainess and the Demon Knight (悪役令嬢と鬼畜騎士, Akuyaku Reijō to Kichiku Kishi) is a Japanese light novel series written by Nekoda and illustrated by Asahiko.

It initially began serialization on the Moonlight Novels female adult section of Shōsetsuka ni Narō in December 2017.

Written by Nekoda, The Villainess and the Demon Knight initially began serialization on the Moonlight Novels female adult section of the user-generated novel publishing website Shōsetsuka ni Narō on December 6, 2017.

[14] During their panel at Anime Expo 2022, Seven Seas Entertainment announced that they licensed the manga for English publication.

[22] The manga adaptation, alongside The Transfer Destination Was a World with few Pharmacists, won the Isekai Comic Prize at NTT Solmare's "Minna ga Erabu!!