Hajime Ishii (?? ?, Ishii Hajime, born August 17, 1934) is a Japanese politician who served in the Diet (national legislature) for 39 years between 1969 and 2013.
A native of Kobe, Hyogo, he attended Konan University as an undergraduate and University of California, Los Angeles as a graduate and received a master's degree in political science from Stanford University.
During his time in the Diet he served as the head of the National Land Agency for six months in 1989-1990 and as Minister for Home Affairs for two months in 1994.