Who was the first prime minister of japan?

The first Prime Minister of Japan was Itō Hirobumi. He was elected on 22 December 1885, and left office on 30 April 1888. He was also the 5th, 7th and 10th Prime Minister. He was assasinated in 1909 by Ang Jung-geun, a Korean nationalist who opposed the Japanese Empire's annexation of the Korean peninsula.