Tatsuoka Mansaku was a kabuki playwright, particularly known for his plays Keisei Yanagizakura, Ise Ondo Koi no Netaba, and Hade Kurabe Ishikawazome, all of which he wrote along with Chikamatsu Tokuzô.
The son of Tatsuoka Hisagiku, Mansaku was originally an actor, but around the late 1760s, he began studying under Fujikawa Sanpachi, and became a playwright. From around the mid-1790s onward, he was among the most prominent playwrights in the Kamigata region, alongside Namiki Gohei I and Chikamatsu Tokuzô.
His childhood name was Mantarô (万太郎); later in life, he also used the poetry names (haimyô) Shiraku (紫楽) and Shikô (紫紅).
- "Tatsuoka Mansaku." Digital-ban Nihon jinmei daijiten (デジタル版 日本人名大辞典, "Digital Version Encyclopedia of Japanese Personages"). Kodansha, 2009. Accessed via Kotobank.jp, 27 January 2011.
- "Tatsuoka Mansaku." Nihon Kokugo Daijiten 日本国語大辞典. Shogakukan. Accessed via JapanKnowledge online resource, 27 January 2011.