Issei Tajima (田島 一成 Tajima Issei, born November 23, 1940) is a Japanese politician serving in the House of Representatives in the Diet (national legislature) as a member of the Democratic Party of Japan. A native of Hikone, Shiga he earned his undergraduate degree in Chuo University, study-abroad credit in Carleton College in Minnesota, United States and master's degree in Doshisha University. He was elected for the first time in 2005.