In the last decade, Morocco has experienced increased population, urban expansion, and improper environmental management, leading to a significant rise in waste production. This situation has exacerbated waste landfill issues, particularly in coastal areas such as Kenitra province, in the north-western part of Morocco. In this region, landfills have been responsible for the degradation and pollution of air, soil, and water resources. Therefore, identifying suitable sites for waste landfills is essential for achieving sustainable environmental management in the study area. The objective of this study is to provide, for the first time, a map of suitable waste landfill sites in Kenitra province. To achieve this objective, a database consisting of nine parameters was collected from environmental and socio-economic sources. The data was gathered and spatialized using various techniques. Subsequently, the Analytical Hierarchy Process (AHP) and Geographic Information System (GIS) were employed to generate the final map of suitable waste landfill sites. The results indicate that the study area can be classified into four categories: 78% of the area is not suitable for landfill development, while areas classified as less suitable, moderately suitable, and highly suitable constitute 1%, 17%, and 4% of the surface, respectively. Based on these findings, three potential landfill locations have been proposed that meet stringent environmental, social, and technical criteria. This work represents the first attempt at improving landfill management in Kenitra province. The combination of AHP and GIS techniques offers a novel approach to landfill site selection. However, additional studies could be conducted, taking into account the results of this study, other parameters, and new data that may become available in the future. The map of suitable landfill sites provides a scientific foundation and could inform management strategies to mitigate pollution and guide territorial planning in the study area.