Demon Lord, Retry! is a Japanese fantasy light novel series written by Kurone Kanzaki and illustrated by Kōji Ogata and Amaru Minotake. It began serialization online in 2016 on the user-generated novel publishing website Shōsetsuka ni Narō, as well as the website Hameln. It was later acquired by Futabasha, which has published the series since June 2017 under its Monster Bunko imprint. A manga adaptation with art by Amaru Minotake has been serialized via Futabasha's digital publication Web Comic Action since October 2017. J-Novel Club has licensed the light novel and manga series for English releases in July 2019, with the first English-translated volume being published in November 2019.