1 INTRODUCTION At a first glance, zonation of a large territory for liquefaction risk seems an almost impossible task since liquefaction is a phenomenon of soil instability occurring at a very local scale, that is it may or it may not occur at a specific location and depth from the ground surface depending on whether certain conditions of soil susceptibility and severity of ground shaking are met at that particular depth. Thus, the macrozonation of liquefaction hazard at the continental scale is a tru- ly hard facing challenge. Yet, a qualitative representation of the variability of liquefaction po- tential within a single country is within reach considering the resolution and accuracy of geolog- ical and geotechnical information that is currently available in the most developed nations. The availability of a macrozonation map of liquefaction risk of a country can be useful to policy makers and administrators of that country in identifying territories that are potentially at risk of earthquake-induced ground failures. This in turn could motivate the interest in drafting plans for further investigations and in-depth studies in those territories. Macrozonation of liquefaction risk of the European territory is currently addressed by the Eu- ropean H2020 research project LIQUEFACT. More specifically, the University of Pavia and EUCENTRE lead the effort of constructing geo-referenced European earthquake-induced soil liquefaction risk maps for various return periods. They are built using available datasets at a continental scale on the expected seismic hazard and on the geological, geomorphological, hy- drogeological, shallow lithology and digital terrain information. Two different types of algo- rithms were used to calculate the risk: data-driven methods like the logistic regression and knowledge-driven methods like the analytical hierarchy process. A validation of this work was carried out by superimposing on the calculated macrozonation maps of liquefaction risk, a GIS- based catalogue of liquefaction manifestations occurred in Europe and well-documented in his- Mapping the liquefaction hazard at different geographical scales C.G. Lai, D. Conca, A. Famà, Ali G. Özcebe & E. Zuccolo Department of Civil and Architectural Engineering, University of Pavia, Italy F. Bozzoni European Centre for Training and Research in Earthquake Engineering, EUCENTRE, Pavia, Italy C. Meisina & R. Bonì Department of Earth and Environmental Sciences, University of Pavia, Italy V. Poggi Global Earthquake Model, GEM, Pavia, Italy R.M. Cosentini Department of Structural, Building and Geotechnical Engineering, Politecnico di Torino, Italy ABSTRACT: The zoning of a territory for liquefaction hazard at different geographical scales is one of the objectives of LIQUEFACT, the H2020 European project that initiated in May 2016 and will end in October 2019. The project also aims at addressing other aspects of liquefaction hazard and risk including the assessment and mitigation of damages to structures and infrastruc- tures caused by earthquake-induced soil liquefaction. The University of Pavia and Eucentre lead Work Package 2, which deals with the zonation of a territory for liquefaction hazard at both continental and municipal or submunicipal scale. Indeed, the goal of WP2 is the definition of a European liquefaction hazard map (macrozonation) as well as the development of a methodolo- gy for the assessment of the liquefaction potential at an urban scale (microzonation). In a map of liquefaction hazard, the territory is subdivided into an appropriate number of homogeneous zones where the likelihood of earthquake-induced soil liquefaction is displaced according to a specified chromatic scale. This paper illustrates some of the achievements obtained in LIQUEFACT concerning the macrozonation of liquefaction hazard in Europe and the microzonation of a town in Northern Italy.