Handa (半田市, Handa-shi) is a city located in Aichi Prefecture, Japan. As of 1 October 2019, the city had an estimated population of 118,259 in 51,846 households, and a population density of 2,494 persons per km². The total area of the city was 47.42 square kilometres. Handa is located in northeastern Chita Peninsula in southern Aichi Prefecture, and is bordered by Mikawa Bay to the east. During the Edo period, the area of Handa was part of Owari Domain. In the post-Meiji restoration establishment of the modern municipalities system on October 1, 1889, the towns of Handa and Kamezaki were founded, as was the town of Narawa the following year. These three towns merged on October 1, 1937, to form the city of Handa. Handa has a strong historical connection with soy sauce, sake and vinegar brewing, and remains the worldwide headquarters of the Mizkan Vinegar Group. During World War II, Nakajima Aircraft Company established an aircraft production plant in Handa. In the post-war period, this was redeveloped into a heavy industrial zone, including a production plant by Dow Chemical.