The monograph outlines selected aspects of application of geoinformation technology particularly of geographic information systems to crisis management. It gives a general description of the motivation for GIS application in this sphere. The need for scientifically and technologically supported instructions allowing standardized disaster management in a sequence of organizational steps is emphasised. Crisis management expects in the case of specific risks from the professional community competently founded instruction in the sense of: what data to choose and how to use them in the procedure to "step by step" in the individual events (outside of formal guidelines resulting from legislation). This process has to put emphasis for minimal necessary data, procedures and time.. The result of the procedure should be clearly visual form usable in the field. Geography and Geoinformatics have possibilities for adjusting data to the demands of crisis management into well applicable form. In the publication there is demonstrated the effective use of geospatial technologies (especially GIS) on five examples of catastrophes that threaten human life, health and economic values.