Sunnhordland is a traditional district in the western region of Norway.

The municipalities of Sveio, Etne, Stord, Bømlo, Fitjar, Kvinnherad, and Tysnes (and sometimes Austevoll) make up the district of Sunnhordaland.

The regional centre of this district is the town of Leirvik in Stord.

In all, the district includes about 2,860 square kilometres (1,100 sq mi) of land.

It is similar in nature to the nearby districts of Nordhordland and Midhordland.