Biosorption of metals from solution by fungal biomass is an alternative to conventional techniques for metal removal. The biomass can be produced for biosorption or be a waste product. The structures that bind heavy metals, the chemical nature of the binding groups at the cell wall and the uptake of metals into the cell are discussed. Data on reaction kinetics and thermodynamics of the sorption process are reviewed. The technology of biosorption and experiences with a pretreatment of the biomass to improve biosorption are further topics. Examples from the literature of heavy metal removal by fungal biomass are given.