Kagoshima 3rd District (鹿児島県第3区, Kagoshima-ken dai-san-ku)is a single-member constituency of the House of Representatives in the Diet of Japan.

It is located in Northern Kagoshima and consists of the cities of Akune, Izumi, Satsumasendai, Hioki, Ichikikushikino, Isa and Aira as well as the towns of Satsuma, Nagashima and Yūsui.

After its creation, the new 3rd district was initially a solid "conservative kingdom", a safe seat for the Liberal Democratic Party.

After initially declaring his retirement from politics, Matsushita returned in 2009 as a candidate for the People's New Party with Democratic support and won the district against Miyaji.

After Matsushita's suicide in 2012, Miyaji won the resulting by-election against government candidate Takeshi Noma.