ōsaka 10th district (大阪府第10区, "ōsaka-fu daijikku" or 大阪10区, "ōsaka-jikku") is a single-member electoral district of the house of representatives, the lower house of the national diet of japan. it is located in northeastern osaka and consists of takatsuki city and shimamoto town, the only remaining municipality of mishima county. as of 2016, 321,805 eligible voters were registered in the district.