Moyasimon: Tales of Agriculture, known in Japan as Moyashimon (もやしもん), is a Japanese manga series by Masayuki Ishikawa. It was serialized in Kodansha's seinen magazine Evening from July 2004 to June 2013 and moved to the magazine Monthly Morning Two, where it concluded in January 2014. The series follows Tadayasu Sawaki, a first-year college student at an agricultural university, who has a unique ability to see and communicate with microorganisms. Del Rey Manga licensed the manga, but only released two volumes in English in North America. An 11-episode anime television series adaptation, animated by Shirogumi and Telecom Animation Film, aired between October and December 2007 on Fuji TV's Noitamina programming block. An 11-episode live action adaptation was aired on Noitamina between July and September 2010. An 11-episode animated second season titled Moyasimon Returns aired from July to September 2012.

The manga, anime, and live action version have all been generally well received by reviewers, with praise received for the artwork and sustaining the viewer's interest through clear presentation of a difficult topic. It won the 2008 Tezuka Osamu Cultural Prize for Grand Prize and the 2008 Kodansha Manga Award for general manga.