Georg Kükenthal (1864-1955) was a German pastor and botanist who specialized in the field of caricology.
He worked as a pastor in Grub am Forst, and later in Coburg. In 1913 he received an honorary degree from the University of Breslau.
Kükenthal was a leading authority on sedges. In his 1909 monograph, he divided the genus Carex into four subgenera: Primocarex, Vignea, Indocarex and Eucarex. Carex is the largest monophylletic (natural) genus of flowering plants; Kükenthal's monograph remains the only comprehensive, world-wide treatment.