The Western Army Infantry Regiment (Japanese: 西部方面普通科連隊, romanized: Seibu Hōmen Futsū-ka Rentai) is a Japanese light infantry regiment that specializes in amphibious operations. Its main purpose is to defend remote islands in Japanese territorial waters, specifically in the Kyushu region and south, including the islands of Okinawa prefecture. Although it is designated a regiment, it is comparable to a typical infantry battalion in size.