Aichi 6th district (愛知県第6区 Aichi-ken dai-roku or simply 愛知6区 Aichi rokku) is a constituency of the House of Representatives in the Diet of Japan (national legislature). It is located in Northwestern Aichi and consists of the cities of Kasugai, Inuyama and Komaki, part of the Chūkyō Metropolitan Area around Nagoya. As of 2012, 420,807 eligible voters were registered in the district. Before the electoral reform of 1994, the area formed part of Aichi 2nd district where four Representatives had been elected by single non-transferable vote.