The occurrence of heavy rains in the Diamare Division (far north of Cameroon), makes this region a sensitive area to recurrent floods. This work provides a flood susceptibility map, which is an important tool for risk management, allowing priority areas to be defined for detailed studies. The methodology applied is Analytical Hierarchy Process (AHP) combined with spatial analysis in GIS. Six flood-conditioning factors were chosen based on their relevant contribution to the flood, and on the expert opinion. These factors have been weighted to determine each factor importance, in the flood occurrence. According to the map, 24, 71% of the study area, was identified as an area with very high susceptibility, whereas very low, low, moderate and high susceptibility zones covered 5,63%; 9,9%; 25,24% and 34,52% of the area, respectively. The quality of susceptibility mapping was validated by the perfect projection of historical floods in the very high and high susceptibility zones.