Musashi Province

Musashi Province (武蔵の国, Musashi no kuni^?) was a province of Japan, which today comprises Tokyo Metropolis, most of Saitama Prefecture and part of Kanagawa Prefecture. It was sometimes called Bushū (武州^?). The province encompassed Kawasaki and Yokohama. Musashi bordered on Kai, Kōzuke, Sagami, Shimōsa, and Shimotsuke Provinces.

Musashi was the largest province in the Kantō region.

The name Musashi, recorded in early records as 牟射志 muzasi, has been conjectured to be of Ainu origin. It has no apparent meaning in Japanese, but mun-sar-i or mun-sar-ihi (weed-marsh-POSS) is a hypothetical Ainu form that would mean "marsh/wetland of (i.e. belonging to) weeds/inedible or otherwise useless plants," and Musashi sits in the middle of the Kantō Plain.

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