Tokushima at-large district (徳島県選挙区, Tokushima-ken senkyoku) was a constituency of the House of Councillors in the Diet of Japan (national legislature).
It consists of Tokushima Prefecture and elects two Councillors, one every three years by a first-past-the-post system for a six-year term.
Single-member districts (ichinin-ku) for the House of Councillors often play a decisive role for the outcome of elections as little swing in votes is required to achieve a change of the Councillors elected there.
Tokushima in predominantly rural Shikoku has for decades voted for candidates from the Liberal Democratic Party (LDP) or ex-LDP conservative independents by large margins.
In the landslide election of 1989 that left the LDP-led government without a majority in the House of Councillors for the first time, a so-called "twisted parliament" (nejire kokkai), Harumi Inui from RENGO trade union federation's Rengō no Kai won Tokushima against incumbent Tomoyoshi Kamanaga by a margin of 60,000 votes.