Tysvær is a municipality in Rogaland county, Norway. It is part of the Haugalandet region. The municipality is located on the Haugalandet peninsula on the northern side of the Boknafjorden, just east of the towns of Kopervik and Haugesund. The administrative centre of the municipality is the village of Aksdal. Other villages in the municipality include Dueland, Førre, Grinde, Hervik, Hindaråvåg, Nedstrand, Skjoldastraumen, Susort, Tysvær, and Yrke.

Haugaland or Haugalandet is a traditional district situated on the western coast of Norway. Haugaland is one of the 15 traditional districts located within the Vestlandet region.