Choosing the location of organic fertilizer production facilities is a critical issue for agricultural enterprises and the agricultural sector. In this study, which is focused on how the selection of the facility location according to the results of the suitability analysis will contribute to the agricultural sector and the environment, Tekirdag province was chosen as the study area. In this direction, basic and sub-criteria were determined in the Analytical Hierarchy Process, and the number of organic fertilizer plants in the sub-criteria groups was specified. The resulting criteria were reclassified according to their importance. Basic criteria: physical, environmental and socio-economic criteria; Sub-criteria are slope, elevation, big soil groups, land use, land use capability classes, distance to road-railways, ports, settlements and electrical energy transmission lines. Consistency rates were calculated for each criterion. The criterion weights calculated in the Analytical Hierarchy Process were overlaid with ArcGIS 10.5 software in the Geographical Information Systems environment and a suitability map for the organic fertilizer plant was obtained. In line with the findings obtained, 81.01% of Tekirdag province shows very high-high-medium suitability and existing organic fertilizer facilities are located in these areas. 8.20% of the province has been found to be very low suitability. The reason for this is that these regions contain national parks and forests. The fact that an organic fertilizer plant is close to the agricultural area is suitable in terms of proximity to the raw material and represents sustainability within the scope of economic input to the country. In this study, AHP method in GIS environment is proposed over Tekirdag province to be used in the decision-making mechanism of national/international agricultural enterprises. Today, environmental impact assessment reports are generally taken into account in decision-making mechanisms for choosing the appropriate area. However, AHP and similar mathematical models are not used in these reports or decision-makers. In this study, according to the data obtained from the modeling of Tekirdag province (75.11% agricultural land, 90% insufficient organic matter), it is suggested to increase the number of facilities that will meet the organic fertilizer need in the southwest region.