Secrets of the Silent Witch (サイレント・ウィッチ 沈黙の魔女の隠しごと, Sairento Uitchi: Chinmoku no Majo no Kakushigoto) is a Japanese light novel series written by Matsuri Isora and illustrated by Nanna Fujimi. It was initially serialized on the user-generated novel publishing website Shōsetsuka ni Narō from February to October 2020. It was later acquired by Fujimi Shobo who began to publish it under their Kadokawa Books imprint in June 2021. A manga adaptation illustrated by Tobi Tana began serialization on Enterbrain's B's Log Comic manga website in July 2021. An anime television series adaptation produced by Studio Gokumi premiered in July 2025.