Kawanishi (川西市, Kawanishi-shi) is a city in Hyōgo Prefecture (兵庫県) in the northwestern part of the Kansai region of Japan, about 5 km north of Osaka Itami Airport. It is bordered on the west by the Inagawa river.
As of August 31, 2016, the city has an estimated population of 159,723 and a population density of 2,948.83 persons per km². The total area is 53.44 km².