The Apothecary Diaries (Japanese: 薬屋のひとりごと, Hepburn: Kusuriya no Hitorigoto, "Apothecary's Soliloquy") is a Japanese light novel series written by Natsu Hyūga and illustrated by Touko Shino. Since 2011, it has been serialized online on the user-generated novel publishing website Shōsetsuka ni Narō. In the following year, it was acquired by Shufunotomo, who initially published the series as a novel with a single volume in 2012 and then as a light novel series in 2014. It has been adapted into two manga series in 2017, with one published by Square Enix in Monthly Big Gangan, and another one published by Shogakukan in Monthly Sunday Gene-X. The light novel is licensed digitally in North America by J-Novel Club and in print by Square Enix, and the manga illustrated by Nekokurage is also licensed by Square Enix. An anime television series adaptation produced by Toho Animation Studio and OLM aired from October 2023 to March 2024. A second season is set to premiere in 2025.