Tactics (stylized as tactics) is a Japanese manga series written as a collaboration between Sakura Kinoshita and Kazuko Higashiyama. It was serialized in Comic Blade Masamune. Kinoshita supplied the character "Kantarou", and Higashiyama supplied the character "Haruka". While the manga was previously licensed for released in English in paperback by both ADV Manga and Tokyopop, the manga was only available in English in digital format on JManga for two years before it was no longer accessible.The animation studio Studio Deen adapted the Tactics manga into a 25-episode anime series, which ran on Japanese television from October 5, 2004, to March 29, 2005. The English dub of the anime was distributed by Manga Entertainment in the United States, Canada and the United Kingdom.

Tactics resumed serialization on January 18, 2018, as tactics 新説 on pixiv comics.