Arakawa (荒川区 Arakawa-ku?, "Desolate River") is a special ward located in Tokyo Metropolis, Japan. The ward takes its name from the river, the Arakawa, though the Arakawa River does not run through or touch the ward. Its neighbors are the wards of Adachi, Kita, Bunkyo, Taito and Sumida. In English, the ward calls itself Arakawa City. Arakawa has sister-city relationships with Donaustadt in Vienna, Austria, and with Corvallis, Oregon, U.S. Domestically, it has similar relationships with nine cities, towns and villages.
As of April 1, 2011, the ward has an estimated population of 205,263, with 95,665 households and a population density of about 20,123.82 persons per km². The total area is 10.20 km². Arakawa is in the northeastern part of Tokyo. The shape is long and narrow, stretching from west to east. The Sumida River forms the northern boundary. The ward is surrounded by five other special wards. To the north lies Adachi; to the west, Kita; to the southwest, Bunkyo. South of Arakawa is Taito, and southeast is Sumida.