German lichenologist.
Klaus Kalb (born 1942) is a German lichenologist and an authority on tropical lichens. Born in Nuremberg, he studied at the University of Erlangen–Nuremberg before pursuing a career that significantly advanced the field of lichenology, particularly in Brazil. Kalb's work in São Paulo from 1978 to 1981 led to a collaboration with Brazilian lichenologist Marcelo Pinto Marcelli, which is considered a model for non-commercial benefit-sharing in taxonomic research. He later became an associate professor at the University of Regensburg and is known for editing the exsiccata series Lichenes Neotropic