Clas (given name)
Clas is a masculine given name. Notable people with the name include:
- Clas Alströmer, Swedish naturalist
- Clas Bjerkander, Swedish meteorologist, botanist and entomologist
- Clas or Klaus Fleming, Finnish-born Swedish nobleman and admiral, Lord High Admiral and Lord High Constable
- Clas Fleming , an admiral and administrator of the Royal Swedish Navy
- Clas Frietzcky, Swedish politician
- Clas Lindberg, Swedish film director and screenwriter
- Clas Theodor Odhner, Swedish historian and director of the Swedish National Archives
- Clas Thunberg, Finnish speed skater and five time Olympic gold medalist
- Clas Åkesson Tott, Swedish field marshal and member of the Privy Council of Sweden
