Hachiōji (八王子市, Hachiōji-shi) is a city located in the western portion of the Tokyo Metropolis, Japan.

The city is surrounded on three sides by mountains, forming the Hachioji Basin which opens up toward the east in the direction of Tokyo.

Kanagawa Prefecture Tokyo Metropolis Hachiōji has a humid subtropical climate (Köppen Cfa) characterized by warm summers and cool winters with light to no snowfall.

[2] Per Japanese census data,[5] the population of Hachiōji has recently plateaued after nine decades of strong growth.

It has been an important junction point and post town along the Kōshū Kaidō, the main road that connected the historical Edo (today's Tokyo) with western Japan.

In the post-Meiji Restoration cadastral reform of July 22, 1878, the area became part of Minamitama District in Kanagawa Prefecture.

Today, Hachiōji mainly serves as a commuter town for people working in Tokyo, and as a location for many large colleges and universities.