We explored appropriate relative permeability curves for steam-water two-phase flows in fractured geothermal reservoirs through steam-water and nitrogen gas-water two-phase flow experiments and simulations on a single fracture and multiple fractures in granite under confining stress. Based on our analysis, we proposed new relative permeability curves, which consist of nu- and X-type curves for single fractures. The nu-X-type relative permeability curves appear to reproduce Icelandic field data for steam and water relative permeabilities, which are difficult to reproduce by porous-rock-type relative permeability curves, indicating that the nu-X-type relative permeability curves are appropriate for steam-water twophase flows in fractured geothermal reservoirs. (C) 2016 Elsevier Ltd. All rights reserved.