Tanegashima , most often called in Japanese and sometimes in English hinawajū , was a type of matchlock-configured arquebus firearm introduced to Japan through the Portuguese Empire in 1543. It was used by the samurai class and their ashigaru "foot soldiers", and within a few years its introduction in battle changed the way war was fought in Japan forever. It, however, could not completely replace the yumi (longbow). Although the Japanese developed various techniques to improve the gun's shortcomings, specifically its slow rate of fire and inability to fire in the rain, it remained inferior to the yumi in these respects, and the latter continued to be an important weapon on the battlefield. After Tokugawa Ieyasu destroyed the Toyotomi clan in the siege of Osaka and established the Tokugawa shogunate, the relatively peaceful Edo period arrived, and the use of tanegashima declined.

Tanegashima (種子島) is one of the Ōsumi Islands belonging to Kagoshima Prefecture, Japan. The island, 444.99 km2 in area, is the second largest of the Ōsumi Islands, and has a population of 33,000 people. Access to the island is by ferry, or by air to New Tanegashima Airport. Administratively, the island is divided into the city, Nishinoomote, and the two towns, Nakatane and Minamitane. The towns belong to Kumage District.