was a district located in Yamaguchi Prefecture, Japan.
As of 2003, the district had an estimated population of 7,946 and a density of 27.37 persons per km<sup>2</sup>. The total area was 290.35 km<sup>2</sup>.
On October 1, 2005 - the town of Tokuji, along with the towns of Aio, Ajisu and Ogà Âri (all from Yoshiki District), was merged with the old city of Yamaguchi (2nd Generation) to create the new and expanded city of Yamaguchi (3rd Generation). Both Yoshiki District and Saba District were dissolved as a result of this merger.