) is an administrative district in the central Kinki region of Japan, with the third highest resident population (night population) after Tokyo and Kanagawa Prefecture, but still ranks second in daytime population in Japan after Tokyo. It is the core area of the Keihanshin area.
It borders Nara Prefecture to the east, Hyogo Prefecture to the northwest, Wakayama Prefecture to the south, and Kyoto Prefecture to the northeast. There are several satellite cities in addition to Osaka City, the sub-capital city.
Osaka Prefecture is the second largest city in Japan, the center of the Kinki region, and the largest city in western Japan. As the second largest transportation hub after Tokyo, numerous railway lines and roads connect the surrounding areas with Osaka as the center, playing a very important role in the Japanese economy. Osaka Prefecture is also the economic, political, cultural, industrial, financial, and educational center of the Kinki region, and the Kinki region centered on Osaka Prefecture also forms one of the world's leading economic zones. In addition, various international events have been held, and it is an international city that hosted the first World Expo in Asia in 1970, the APEC meeting in 1995, the G20 summit in 2019, and the Osaka World Registration Expo in 2025.
The prefectural seat is Osaka City. It is composed of the eastern part of Settsu Kingdom (7th District), Kawachi Province, and Izuumi, which is the ordinance country, and is also called the Sub River after the three kingdoms. The southeastern part of Ba-guk (part of the extreme part) is also included. Incorporation of Sakai Prefecture From 1881, Nara Prefecture was re-established, and until 1887, it included all of Yamato.
It is the economic and transportation center of the Kinki region, with a population of about 8,839,000, the third largest in the country, and the second largest in the country in weekly population and population density after Tokyo. The scale is incomparable to that of Aichi Prefecture, and the entire prefecture belongs to the Osaka metropolitan area, and there are many highly urbanized areas.
In the Economist Intelligence Unit's 'Most Livable City' ranking, Osaka was ranked fourth in the world after Vienna, Melbourne and Sydney.
It is the hometown of the Omono and Monobe clan, and has been a port city and domestic distribution center since ancient times. Sumiyoshitsu and Nambatsu near Sumiyoshi Taisha (Sumiyoshi Ward, Osaka City) as the terminus of the route through the Seto Inland Sea. had the function.
In the Heian period, this land located at the mouth of the Yodogawa River was linked with Kyoto by water transport (Watanabezu), and this relationship through water transport continued until the railroad was built in the Meiji period. Maro's third son, Sakagami Hirono, became the lord of Hiranosho (Hirano Ward, Osaka City), Sumiyoshi-gun, Settsu Province, and the Sakagami clan, said to be his descendant, assumed control over the plains in the Middle Ages.
From the end of the Kamakura period to the northern and southern dynasties, Masanari Kusunoki, who was called a villain in Kawachie, appeared and played an active part. The Kusunoki clan, including Masanari, frequently fought against the northern dynasties such as Ashikaga Takashi in Hanai as powerful military commanders of the Southern dynasty. Entering the Warring States period, there was confusion in the battle over the Hatakeyama clan and the Hosokawa clan. During this period, Sakai (Sakai City) formed an autonomous city centering on the wealthy cities, and until now, the Hyogo Mina