Friedrich Alexander Buhse (30 November 1821, Riga – 29 December 1898) was a Baltic-German botanist.
From 1840 he studied botany at the universities of Dorpat, Berlin and Heidelberg, receiving his PhD in 1843. In 1847-49, with Pierre Edmond Boissier, he collected plants in Transcaucasia and Persia. In 1852 he became a correspondent member of the Société linnéenne de Lyon.
With Boissier he circumscribed many species of plants. The botanical genus Buhsia (family Capparaceae) was named in his honor by Alexander Bunge.