is a colloquial name for a neighborhood of Chiyoda Ward in Tokyo. The area along Hibiya Street (National Route 1) from Yà «rakuchà  to Uchisaiwaichà  is generally considered Hibiya district. Administratively, it is part of the Yà «rakuchà  district.
There is no actual administrative district in Chiyoda called "Hibiya" but the name is used in some local place names such as Hibiya Park and Hibiya Station (administratively in Yà «rakuchà Â). Hibiya was part of the old Kà Âjimachi ward in Tokyo City, before it was transformed into a metropolis.
The outskirts of this district are reclaimed from the ocean, and the "hibi" of Hibiya is derived from the facility for the laver of nori made of bamboo, whose name is also "hibi". This effectively makes the word an ateji, kanji characters used to phonetically represent native Japanese words.
Originally an inlet of the sea ran northwards to a cove at present-day Hibiya and Kokyo Gaien plaza, into which the Kanda River flowed.
In the era of Tokugawa shogunate, the Tokugawa bakufu worked out of Edo castle and the area surrounding Edo castle was developed and landfilled. The fishing village then became an urban area where many daimyà  lived.
On September 5, 1905, Hibiya Park was the initial site of the Hibiya riots, which expanded into a citywide riot, triggered by the terms of the Treaty of Portsmouth which ended the Russo-Japanese War (1904âÂÂ1905).
After the end of the Meiji Restoration Hibiya, the city of Tokyo had become a modern city for there were many buildings including the Imperial Hotel (Tokyo's first western hotel), Rokumeikan, Tokyo city hall and the Tokyo Club. In the 1930s, the first electric traffic light in Japan appeared at a Hibiya crossing point. The once fashionable district has changed into a business street.
Hibiya and Yurakucho stations are connected by underground passageways.