Daitoshokan no Hitsujikai: A Good Librarian Like a Good Shepherd (大図書館の羊飼い, lit. Large Library's Shepherd or The Shepherd of the Great Library) is a Japanese adult visual novel developed by August and released on January 25, 2013 for Windows PCs as a DVD. The gameplay in Daitoshokan no Hitsujikai follows a branching plot line which offers pre-determined scenarios with courses of interaction, and focuses on the appeal of the five female main characters by the player character. A fan disc for Windows titled Daitoshokan no Hitsujikai: Hōkago Shippo Days, rated for ages 15 and older, was released in August 2013. A second, adult fan disc titled Daitoshokan no Hitsujikai: Dreaming Sheep was released in March 2014. A PlayStation Vita port of the original game and fan discs featuring additional content will be released in 2015.

There have been five manga adaptations based on the game published by ASCII Media Works, Ichijinsha, Kadokawa Shoten and Media Factory. Comic anthologies and light novels were also published, as were several music albums. An anime adaptation produced by Hoods Entertainment premiered in Japan in October 2014.