Aichi 12th district

Aichi 12th district (愛知県第12区, Aichi-ken dai-ju-niku  or simply 愛知12区, Aichi ju-niku) is a single-member constituency of the House of Representatives in the national Diet of Japan located in Aichi Prefecture.

since 2017

 * Okazaki
 * Nishio

2013 - 2017

 * Okazaki
 * Nishio
 * Nukata District

1994 - 2013

 * Okazaki
 * Nishio
 * Nukata District
 * Hazu District

2017

 * Aoyama was additionally elected by Tokai proportional representation block following Sei Ōmi's resignation(running in a Anjō mayoral election).