Clas is a masculine given name. Notable people with the name include:

Clas Alströmer (1736–1794), Swedish naturalist

Clas Bjerkander (1735–1795), Swedish meteorologist, botanist and entomologist

Clas or Klaus Fleming (1535-1597), Finnish-born Swedish nobleman and admiral, Lord High Admiral and Lord High Constable Clas Larsson Fleming (1592-1644), an admiral and administrator of the Royal Swedish Navy Clas Frietzcky (1727–1803), Swedish politician Clas Lindberg (born 1956), Swedish film director and screenwriter Clas Theodor Odhner (1836-1904), Swedish historian and director of the Swedish National Archives Clas Thunberg (1893-1973), Finnish speed skater and five time Olympic gold medalist Clas Åkesson Tott (c. 1530–1590), Swedish field marshal and member of the Privy Council of Sweden

Clas (given name)

See also

Claes

Swedish masculine given names

Masculine given names

Clas (given name)