This is a list of prime ministers of Japan by home prefecture. This is based on prefectures where each prime minister was born, and not based on prefectures primarily affiliated or most closely associated with the prime ministers due to residence, professional career, or electoral history.
This list includes Provinces, the former administrative divisions used from the 600s to 1882.
Twelve provinces and twenty-one prefectures, including 1 metropolis (Tokyo) have the distinction of being the birthplace of a prime minister.
Born on 1 April 1870, Hamaguchi Osachi was the first prime minister born after the establishment of the Empire of Japan.
Born on 21 September 1954, Shinzo Abe was the first prime minister born after the establishment of the post-war state of Japan.
The number of prime ministers per provinces and prefectures in which they were born are: