Proper site selection is fundamental in the success of any aquiculture enterprise. To identify suitable areas for freshwater prawn culture in Pernambuco, factors like elevation, relief, soil and climate were considered, in accordance with the species biology and pond construction. According to the established criteria, suitable, unsuitable and unfavorable areas, with some restrictions, were recognized. Suitable areas for freshwater prawn culture in Pernambuco are about 835 km², representing 0.85% of the total area of the State.