Harem in the Labyrinth of Another World (Japanese: 異世界迷宮でハーレムを, Hepburn: Isekai Meikyū de Haremu o, lit. "Building a Harem in Alternate World Dungeon") is a Japanese light novel series written by Shachi Sogano and illustrated by Shikidouji. It was serialized online from 2011 to 2019 on the user-generated novel publishing website Shōsetsuka ni Narō. It was later acquired by Shufunotomo, who have published thirteen volumes since December 2012 under their Hero Bunko imprint. A manga adaptation with art by Issei Hyōju has been serialized in Kadokawa Shoten's shōnen manga magazine Monthly Shōnen Ace since April 2017. It has been collected in ten tankōbon volumes. An anime television series adaptation produced by Passione aired from July to September 2022.