Clas Bjerkander, Swedish meteorologist, botanist, and entomologist (b. 1735)
Clas Bjerkander (23 September 1735, Skara – 1 August 1795) was a Swedish meteorologist, botanist, and entomologist.

A Lutheran pastor, Bjerkander studied at the University of Uppsala.

With Anders Dahl he wrote Svenska Topographiska Sällskapet i Skara ("Schwedische topographische Gesellschaft zu Skara") and, as sole author several short scientific papers on Microlepidoptera.

Taxa named for him include

Pyralis bjerkandriana (Mehlmotte)

Bjerkandera P. KarstIn 1778, Bjerkander was elected a member of the Royal Swedish Academy of Sciences.